Which graph represents the function f(x)=-|x-1|-2

Answers

Answer 1

Answer:

its in the picture

Step-by-step explanation:

Graph the absolute value using the vertex and a few selected points.

x          y

−1        -4

 0       -3

 1        -2

 2       -3

 3       -4

basically, the answer is the graph that looks like this...

hope this helps ;)

Which Graph Represents The Function F(x)=-|x-1|-2

Related Questions

A small can of beans is 3 in. high with a 1 in. radius and sells for $1.49. Which can of beans is a better deal?


a. 9 in. high; 3 in. radius; sells for $39.95

b. 3 in. high; 2. in. radius; sells for $5.96

c. 3 in. high; 3 in. radius; sells for $13.41

Answers

Therefore, can b and c are the same better deal since they have the same price per cubic inch using the volume of a cylinder.

Volume of a cylinder calculation.

To compare which can of beans is a better deal, we need to calculate the volume of each can and divide it by the price. The can with the highest volume per dollar is the better deal.

a) The volume of the can is V=πr²h=(3.14)(3²)(9)=254.34 cubic inches. The price per cubic inch is $39.95/254.34 = $0.157, rounded to three decimal places.

b) The volume of the can is V=πr²h=(3.14)(2²)(3)=37.68 cubic inches. The price per cubic inch is $5.96/37.68 = $0.158, rounded to three decimal places.

c) The volume of the can is V=πr²h=(3.14)(3²)(3)=84.78 cubic inches. The price per cubic inch is $13.41/84.78 = $0.158, rounded to three decimal places.

Therefore, can b and c are the same better deal since they have the same price per cubic inch.

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Let's take a collection of any three 'high mountains of Nepal' and answer following questions. a) Is it a well-defined collection? Give reason. b) Is it a set? Give reason. c) Let's express it as a well-defined collection.​

Answers

The collection of "high mountains of Nepal" is subjective and not well-defined, it may or may not be a set depending on the criteria specified, and to express it as a well-defined collection.

a) It is not a well-defined collection because the term "high mountains of Nepal" is subjective and does not have a clear definition. What one person considers high might be different from what another person considers high.

b) It is not necessarily a set, depending on how the collection is specified. If the collection is specified using clear criteria (such as mountains over a certain height), then it could be a set.

However, if the collection is just described using vague language like "high mountains of Nepal," then it is not necessarily a set.

c) In order to articulate it as a precise collection, we may define a precise standard for what constitutes a "high mountain of Nepal." As an illustration, we could say that any peak in Nepal that rises higher than 7,000 meters qualifies as a high mountain there.

With this precise definition, we could then pinpoint a trio of Nepalese mountains.

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The chef at Pickin' Chicken Café bought 4 bunches of celery that each weighed 2 pounds. She cut up 3 pounds to serve with chicken wings. Then, she diced 8 ounces to put on garden salads. How many pounds of celery does she have left?

Answers

As per the unitary method, the chef has 9.14 pounds of celery left after cutting up 3 pounds to serve with chicken wings and dicing 8 ounces to put on garden salads.

To start, let's convert all of the weights to the same units. The chef bought 4 bunches of celery, each weighing 2 pounds, so in total she bought:

4 bunches * 2 pounds per bunch = 8 pounds

Next, we know that she used 3 pounds of celery for the chicken wings and 8 ounces (which is half a pound) for the garden salads. So in total she used:

3 pounds + 0.5 pounds = 3.5 pounds

To find the value of one pound of celery, we can subtract the amount of celery the chef used from the total amount of celery she bought, and then divide by the number of pounds she bought:

(8 pounds - 3.5 pounds) / 8 = 0.4375 pounds per pound

So one pound of celery is worth 0.4375 pounds. Now we can use this value to find out how many pounds of celery the chef has left. We know she started with 8 pounds of celery, and she used 3.5 pounds, so she must have:

(8 pounds - 3.5 pounds) / 0.4375 pounds per pound = 9.14 pounds left

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Central Limit Theorem forms the foundation for the ___ branch of statistics

Answers

Central Limit Theorem forms the foundation for the inferential statistics branch of statistics

The Central Limit Theorem is a statistical concept that describes the behavior of the mean of a sufficiently large sample size drawn from any population with a finite mean and variance.

The Central Limit Theorem is a fundamental concept in statistics that states that, under certain conditions, the distribution of sample means approaches a normal distribution regardless of the shape of the population distribution. This theorem provides a basis for inferential statistics, which involves making inferences about a population based on a sample.

It allows us to use sample statistics to estimate population parameters with a certain level of confidence. This theorem has practical applications in many areas of research, such as in quality control, social sciences, and healthcare.

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what are the best displays for bivariate categorical data

Answers

The best displays for bivariate categorical data depend on the nature of the data and the research question. Here are a few common types of displays for bivariate categorical data:

Clustered Bar Charts: This display shows the frequency of each category of two variables side-by-side.

Stacked Bar Charts: This display shows the frequency of each category of two variables stacked on top of each other.

Mosaic Plots: This display shows the relative proportion of each combination of two categorical variables by area.

Heat Maps: This display is a two-dimensional table that is color-coded to show the relationship between two categorical variables.

Tree Maps: This display shows the proportion of each category of two variables by area.

The choice of display should be guided by the nature of the data and the research question being addressed.

~~~Harsha~~~

Jerel runs 6 days each week. He runs 4.2 km each day for the first 6 days. If Jerel runs a total of 25km, write and solve an equation to find how many kilometers he runs on the sixth day.

Answers

Jerel runs 4 km on the sixth day.

How to determine how many kilometers he runs on the sixth day.

Let's call the distance Jerel runs on the sixth day "x". We know that he runs 4.2 km each day for the first 6 days, so the total distance he runs in those 6 days is:

Total distance = 4.2 km/day x 6 days = 25.2 km

We also know that the total distance Jerel runs is 25 km, so we can set up an equation to solve for "x":

4.2 km/day x 5 days + x = 25 km

Simplifying the equation, we get:

21 km + x = 25 km

Subtracting 21 km from both sides, we get:

x = 25 km - 21 km

x = 4 km

Therefore, Jerel runs 4 km on the sixth day.

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How many planes of symmetry does a right pyramid with an isosceles triangle base have?

Answers

A right pyramid with an isosceles triangle base has one plane of symmetry.

How many planes of symmetry does a right pyramid with an isosceles triangle base have?

A plane of symmetry is a plane that can be passed through an object such that the object is divided into two halves that are mirror images of each other.

In the case of a right pyramid with an isosceles triangle base, if a plane passes through the apex (the top point) of the pyramid and is perpendicular to the base, it will bisect the base into two halves that are mirror images of each other. This is the only plane of symmetry that exists for this particular pyramid.

Thus, the right pyramid with isosceles triangle base has one plane of symmetry.

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Kiera had 1 1/3 cups of coffee in the morning and 1 1/4 cups of coffee in the afternoon. She wants to add the fractions 1 1/3+ 1 1/4 to find how much coffee she drank in all.

She can add the whole numbers, but before she can add the fractions she must find the common denominator. Drag and drop the numbers into the boxes to make the statement true.
Picture attached to
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
To add and Kiera found the common denominator is Response area. Before adding the fractions together she wrote the numerator of the first fraction as Response area and the numerator of the second fraction as Response area.

Answers

For given problem, The common denominator is 12 and Before adding the fractions the numerator of first fraction was 16 and numerator of second fraction was 15.

What are fractions?

The representation of sections or portions of a whole using fractions is common. It consists of Numerator and the denominator reflects the total number of equally sized pieces that make up the whole, whereas the numerator represents the number of components we have.

For example, in the fraction 5/4, 4 is the denominator and 5 is the numerator.

Now for given problem,

Kiera had [tex]1\frac{1}{3}[/tex] cups of coffee in the morning, equivalent to [tex](4/3)[/tex] cups of coffee.

Kiera also had[tex]1 \frac{1}{4}[/tex] cups of coffee in the afternoon, equivalent to [tex](5/4)[/tex] cups of coffee.

Now we can add the two fractions together:

[tex](4/3) + (5/4)[/tex]

To find common Denominator;

(LCM) of 3 and 4 is 12

Making denominator of both fraction 12;

[tex](4/3) * (4/4) + (5/4) * (3/3)[/tex]

[tex](16/12) + (15/12)[/tex]

[tex]16/12 + 15/12 = (16 + 15)/12 = 31/12[/tex]

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given that a test statistic for testing if the true proportion exceeds 0.75 is 1.91. what is the p-value for this test? round to 3 d.p.

Answers

p-value of 0.028 is considered statistically significant at a significance level of 0.05. This suggests that we have strong evidence to reject the null hypothesis in favor of the alternative hypothesis that the true proportion exceeds 0.75.

To calculate the p-value for this test, we need to use the standard normal distribution table or a statistical software.

First, we need to find the area under the standard normal distribution curve to the right of the test statistic of 1.91.

Using a standard normal distribution table, we can find that the area to the right of 1.91 is 0.0287 (rounded to four decimal places).

Since this is a one-tailed test (the alternative hypothesis is that the true proportion is greater than 0.75), the p-value is equal to the area to the right of the test statistic, which is 0.0287.

Therefore, the p-value for this test is 0.028 (rounded to three decimal places). This means that if the null hypothesis (that the true proportion is less than or equal to 0.75) were true, we would expect to see a test statistic as extreme as 1.91 or more extreme in only 0.028 of all possible samples.

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The p-value for the test when the test statistic is 1.91 and we are testing if the true proportion exceeds 0.75 is

approximately 0.028, rounded to 3 decimal places.

Given that the test statistic for testing, if the true proportion exceeds 0.75, is 1.91, we need to find the p-value for this

test and round it to 3 decimal places.

Identify the test statistic

The test statistic provided is 1.91.

Determine the tail of the test

Since we are testing if the true proportion exceeds 0.75, it is a right-tailed test.

Find the p-value

Using a Z-table or statistical software, find the area to the right of the test statistic (1.91) under the standard normal

distribution. This area corresponds to the p-value.

The area to the right of 1.91 in the Z-table is approximately 0.028. Therefore, the p-value for this test is approximately

0.028.

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If you get paid $520 for 2 weeks at $13 per hour, how many hours did you
work each week?

O 40
O 30
O 20
O 10

Answers

Answer:

20 hours

Step-by-step explanation:

for 1 week 560/2

=260

calculation for working hours

Total wage=Rate per hour × actual time spend on working.

Let actual working hours be (x)

260=13×X

260/13=X

20=X

20 hours

The price of bike one year ago was Rs.268000.The current price is Rs.290900.what is the increment percentage?

note answer to the nearest whole number.​

Answers

The percentage increment of the bike is 86%

What is Percentage Increment?

Percentage Increment is the percentage measurement of how much a certain figure changes or increases over time. It is the difference between the final value and the initial value, expressed in the form of a percentage.

How to determine this

When the price of a bike one year ago was Rs.268,000

i.e Initial value = Rs.268,000

The current price is Rs.290,900

i.e final value = Rs.290,900

To calculate the percentage increment

Percentage Increase = Final value - Initial value/Initial value * 100%

Percentage increase = Rs.290,900 - Rs.268,000/Rs.268,000 *100%

Percentage Increase = Rs.22,900/Rs.268,000 *100%

Percentage Increase = 2,290,000/268,000

Percentage Increase = 86%

Therefore, the percentage increment is 86%

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in the newspaper article referred to in exercise 9.57, 32% of the 1600 adults polled said the u.s. space program should emphasize scientific exploration. how large a sample of adults is needed for the poll if one wishes to be 95% confident that the estimated per- centage will be within 2% of the true percentage?

Answers

To determine the sample size needed for the poll, we can use the formula:

n = (z^2 * p * q) / E^2

where:
n = sample size
z = z-score for the desired level of confidence (95% in this case), which is 1.96
p = estimated proportion (0.32, based on the 32% result from the previous poll)
q = 1 - p
E = margin of error (0.02, or 2%)

Substituting the values, we get:

n = (1.96^2 * 0.32 * 0.68) / 0.02^2
n = 752.65

Rounding up to the nearest whole number, we get a sample size of 753. Therefore, to be 95% confident that the estimated percentage will be within 2% of the true percentage, a sample of at least 753 adults is needed.

15 POINTS PLEASE I NEED HELP

Answers

Answer:

x = 7∠ECB = 65°

Step-by-step explanation:

You want the measures of x and ∠ECB in rectangle ABCD with center point E and AE=3x+6, BD=5x+19, ∠EBA=25°.

Diagonals

The diagonals of a rectangle are congruent and cross at their midponts. This means the triangles they form are all isosceles.

X

The value of x can be found by relating the length of a half-diagonal to the length of the whole diagonal.

  2·AE = BD

  2(3x +6) = 5x +19 . . . . . . . substitute given lengths

  6x +12 = 5x +19 . . . . . eliminate parentheses

  x = 7 . . . . . . . . . . . subtract 5x+12

The value of x is 7.

Angle

Angle EBC is the complement of angle EBA, so its measure is ...

  ∠EBC = 90° -∠EBA

  ∠EBC = 90° -25° = 65°

Angle ECB is the other base angle of isosceles triangle BCE, so has the same measure as ∠EBC.

  ∠ECB = 65°

__

Additional comment

You know the corner angles of a rectangle are 90°, which is what makes angles EBA and EBC complementary.

With x = 7, AE = 27 and BD = 54. The full diagonal is double the length of the half-diagonal, as you expect.

<95141404393>

Find all angle measures in the diagram.
The measure of ZKJL =
The measure of ZNJM =
The measure of ZMJL=

Answers

Answer: 1. 45%

              2. 32%

              3. 67%

The legs of a right triangle measure 39 and 80 units. What is the measure of the
hypotenuse? Answer as a number only.

Answers

Answer: probably  89

Step-by-step explanation: looked it up "you have the wrong picture up"

The hypotenuse of the given right-angled triangle is 89 units.

From the below figure, the base of the triangle AB = 39 units

The height of the triangle AC = 80 units

To know the hypotenuse of the given triangle we have to use the Pythagoras theorem as shown below,

From the given figure,

BC² = AB² + AC²

BC² = 39² + 80²

BC² = 1521 + 6400

BC² = 7921

BC = √7921

BC = 89.

From the above analysis, we can conclude that the hypotenuse of the given right-angled triangle is 89 units.

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Given question is having the wrong picture. I am attaching required correct picture as below,

Given a quadratic equation in vertex form, find the vertex, axis of symmetry, whether the graph
opens up or down, the maximum or minimum, and the y-intercept. Graph it!
16. y = -2(x + 2)² +4
Vertex:
Axis of symmetry:
Opens: up
Maximum
down
Minimum
X=h A must write
x=
Max/Min Value:

Answers

The key features of the given quadratic equation include the following:

Vertex = (-2, 4)

Axis of symmetry: x = -2.

Direction of opening: downward.

There is a maximum (max) at 4.

y-intercept = (0, 0).

roots: x = -4 and x = 0.

What is the vertex form of a quadratic equation?

In Mathematics and Geometry, the vertex form of a quadratic equation is modeled by this formula:

f(x) = a(x - h)² + k

Where:

h and k represents the vertex of the graph.a represents the leading coefficient.

Based on the information provided about the graph of this quadratic equation, we can reasonably infer and logically deduce that its vertex can be determined as follows:

y = -2(x + 2)² +4

Vertex, (h, k) = (-2, 4)

Axis of symmetry, Xmax = -2.

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A college cafeteria is looking for a new dessert to offer its 4,000 students. The table shows the preference of 225 students.


Ice Cream Candy Cake Pie Cookies
81 9 72 36 27


Which statement is the best prediction about the number of cookies the college will need?
The college will have about 480 students who prefer cookies.
The college will have about 640 students who prefer cookies.
The college will have about 1,280 students who prefer cookies.
The college will have about 1,440 students who prefer cookies.

Answers

The best prediction is that the college will have about 480 students who prefer cookies.

To solve this problem

According to the table, 27 out of 225 students prefer cookies. To find the prediction for the number of cookies the college will need, we can set up a proportion:

27/225 = x/4000

Where x is the predicted number of students who prefer cookies.

Solving for x, we get:

x = (27/225) * 4000

x ≈ 480

Therefore, the best prediction is that the college will have about 480 students who prefer cookies.

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50.12 in word form

PLEASE HELP ME I WILL DO WHATEVER

Answers

fifty and twelve hundredths

Could
7.7
cm
,
4.0
cm
,
7.7 cm,4.0 cm,7, point, 7, start text, space, c, m, end text, comma, 4, point, 0, start text, space, c, m, end text, comma and
1.7
cm
1.7 cm1, point, 7, start text, space, c, m, end text be the side lengths of a triangle?
Choose 1 answer:
yes
or
no?

Answers

By triangle inequality theorem  7.7 cm,4.0 cm, 1.7 cm can not sides of the triangle.

We know that the triangle inequality theorem states that the sum of any two sides of a triangle is greater than or equal to the third side.

For example, is a, b and c be sides of triangle then a + b ≥ c.

Here, the sides of triangle are:  7.7 cm, 4.0 cm, 1.7 cm

Let  a = 7.7 cm,

b = 4.0 cm,

c = 1.7 cm

consider the sum of sides b and c.

b + c = 4. 0 + 1.7

b + c = 5.7 cm

which is not greater than 7.7 cm (length of side  'a')

This means that, by triangle inequality theorem  7.7 cm,4.0 cm, 1.7 cm can not sides of the triangle.

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The complete question is:

Could 7.7 cm,4.0 cm, 1.7 cm be the side lengths of a triangle?

which ones multi answer
191 cm
191 cm
162 cm
162 cm
170 cm
170 cm
152 cm
152 cm
192 cm
192 cm
168 cm
168 cm
201 cm
201 cm
205 cm
205 cm
190 cm
190 cm
161 cm
161 cm
193 cm
193 cm
195 cm
195 cm
177 cm

Answers

The heights that people had a foot size smaller than 24 centimetres would be = 162cm, 152cm, 162cm, 161cm,162cm.

How to determine the number of foot size lees than 24cm?

The total number of people whose foot sizes and heights where obtained for the study = 15

The heights that had foot sizes less than 24cm= 162cm, 152cm,162cm,161cm,162cm.

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6. age of his son by A two-digit number is such that the sum of the digits is 13 and the product of the digits is 40. Find the number.
7 A two-digit number is less than 6 times the sum of its digits by 1. The difference between the digit is 1. Find the number. ​

Answers

Answer:

6.

solution:

8+5=13

8×5=40

What is the term for the digits that exceed the certainty of the instrument?

Answers

The term you're looking for is "uncertain digits."

Uncertain digits refer to the digits in a measurement that exceed the level of certainty provided by the measuring instrument.

Measurements, it is crucial to recognize the limitations of the instruments being used, as this can impact the precision and accuracy of the results.
Precision is the degree to which an instrument can consistently produce the same measurement, while accuracy is the closeness of a measurement to its true value.

Uncertain digits can affect both of these aspects.
To better understand uncertain digits, consider the following step-by-step explanation:
Identify the measuring instrument:

This could be a ruler, thermometer, or any other device used to take measurements.
Determine the instrument's least count:

The least count is the smallest unit the instrument can measure.

A ruler with millimeter markings has a least count of 1 millimeter.
Record the measurement:

When taking a measurement, include all the certain digits (those within the instrument's least count) and one uncertain digit.

The uncertain digit is an estimate, and it represents the best guess within the least count of the instrument.
Keep in mind the limitations:

Recognize that uncertain digits are an inherent part of the measuring process and that they affect the precision and accuracy of the results.
Uncertain digits are the digits that exceed the certainty of a measuring instrument.

It is important to consider these digits and the limitations of the instruments used when conducting experiments or making measurements.

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fP=\ (x, y) : y = 3x-1, x ≤ 4, xe N}, find P * 1 State the elements of the following relations: (b) y = 4x (d) x + y >= 20 y = x (a) (c) x + y ​

Answers

Answer:

Step-by-step explanation:

To find P * 1, we need to find all pairs of elements in P that have a difference of 1. Let's start by listing the elements of P:

P = {(1, 2), (2, 5), (3, 8), (4, 11)}

Now, we can find all pairs of elements in P that have a difference of 1:

(1, 2), (2, 5) -> (1, 5)

(2, 5), (3, 8) -> (1, 3)

(3, 8), (4, 11) -> (1, 3)

Therefore, P * 1 = {(1, 5), (1, 3), (1, 3)} = {(1, 5), (1, 3)} (since the last pair is a duplicate).

(b) The given relation is: y = 4x

The elements of this relation are all pairs (x, y) such that y = 4x. For example, (1, 4), (2, 8), (3, 12), etc.

(c) The given relation is: x + y ≥ 20

The elements of this relation are all pairs (x, y) such that x + y is greater than or equal to 20. For example, (1, 19), (2, 18), (3, 17), etc.

(d) The given relation is: y = x

The elements of this relation are all pairs (x, y) such that y = x. For example, (1, 1), (2, 2), (3, 3), etc.

PLEASE HELP AND SHOW WORK! EXPLAIN HOW YOU GOT THE ANSWER I WILL MARK YOU BRAINLIEST!!!

Answers

The height of the cylinder, given the volume and the diameter of the base, would be 2, 592.46 feet

How to find the height of the cylinder ?

The given diameter of the base is 10 inches, so we need to find the radius first. The radius is half the diameter:

Radius (r) = Diameter / 2 = 10 inches / 2 = 5 inches

We also need to convert the radius from inches to feet since the volume is given in cubic feet:

5 inches = 5/12 feet = 0.4167 feet

Volume of a cylinder:

Volume (V) = πr²h

450π = π x (0.4167)^2 x h

450 = (0.4167)^2 x h

h = 450 / (0.4167)^2 = 2, 592.46 feet

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Find an equation for the perpendicular bisector of the line segment whose endpoints
are(-1, , -8) and (5, 4).

Answers

An equation in slope-intercept form for the perpendicular bisector of the line segment with endpoints (-1, -8) and K (5, 4) is y = 2x - 6.

How to determine an equation of this line?

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

m represent the slope.x and y represent the points.

First of all, we would determine the slope of this line;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (4 + 8)/(5 + 1)

Slope (m) = 12/6

Slope (m) = 2.

At data point (-1, -8) and a slope of 2, a linear equation in slope-intercept form for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - (-8) = 2(x - (-1))

y + 8 = 2x + 2

y = 2x - 6.

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Clare bought her first home for $135,000 in 2001. In 2006, the value of real estate in her area had increased by 18%. Based on this, how much was Clare's home worth in 2006?

Answers

Answer:

To find the value of Clare's home in 2006 after an 18% increase, we can use the following formula:

Value in 2006 = Value in 2001 x (1 + Percent Increase)

Plugging in the values given in the problem, we get:

Value in 2006 = $135,000 x (1 + 0.18)

Simplifying this expression, we get:

Value in 2006 = $135,000 x 1.18

Value in 2006 = $159,300

Therefore, Clare's home was worth $159,300 in 2006 after an 18% increase in value from its original price of $135,000 in 2001.

develop an estimate regression equation with both television advertising and newspaper advertising as independent variables. what are the correct interpretations of the estimated regression parameters? are this interpretation reasonable?

Answers

In a regression equation, the estimated coefficients represent the change in the dependent variable for a one-unit increase in the corresponding independent variable, holding all other independent variables constant.

For example, if the estimated coefficient for television advertising is 0.5, then we can interpret it as a $0.5 increase in the dependent variable (such as sales) for every one-unit increase in television advertising expenditure, holding newspaper advertising constant.

Whether the interpretations of the estimated coefficients are reasonable depends on the data and the research question being investigated. It is important to examine the statistical significance, magnitude, and direction of the estimated coefficients, as well as their practical relevance and theoretical soundness, to evaluate the validity and usefulness of the regression model.

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Simplify with steps shown:(p²+17p+70)/9p³ +63p² * 3/p+10

Answers

The simplified formula is therefore [tex](p^2 + 31p - 140) / 9p^3 (p - 10)[/tex] as factor the first fraction's numerator and discover a shared denominator.

what is fraction ?

A fraction is a percentage of an entire amount or a ratio of two numbers. It is a means to express a numeric value that is neither a whole number nor an integer. The number at the top of a fraction is called the numerator, while the number at the bottom is called the denominator. The denominator is the entire amount of elements of the entirety or the ratio's divisor, while the numerator is the portion that makes up the entirety or ratio that is being evaluated.

given

We must factor the first fraction's numerator and discover a shared denominator for the two fractions in order to simplify this expression:

(p² + 17p + 70) / 9p³ + 63p² * 3 / (p + 10)

= (p + 10)(p + 7) / 9p³ + 189p² / (p + 10)

= (p + 10)(p + 7); 9p3 + 189p2; (p - 10)/(p + 10); (p - 10)

= 189p2(p - 10)/9p3(p + 7)/9p3(p + 10) (p - 10)

= [(p + 10)(p + 7) + 21p²(p - 10)] / 9p³(p - 10) (p - 10)

= [(p² + 31p - 140) / 9p³(p - 10)]

The simplified formula is therefore [tex](p^2 + 31p - 140) / 9p^3 (p - 10)[/tex] as factor the first fraction's numerator and discover a shared denominator.

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I don't understand this question. simplify -3(x+7)

Answers

Answer: - 3x - 21

Step-by-step explanation:

All you have to do is distribute the -3

-3 multiplied by x is -3x

and -3 multiplied by +7 is -21

put it together

- 3x - 21

A chemist wishes to make a 10% acid solution. she has a 4% acid solution and a solution that is 28% acid. how many liters of each should she use if she needs 5 liters of the 10% solution?

Answers

The chemist should use 3.75 liters of the 4% acid solution and 1.25 liters of the 28% acid solution to make 5 liters of a 10% acid solution.

Let's denote the volume of the 4% acid solution as x and the volume of the 28% acid solution as y, both in liters.

To make a 10% acid solution, we need to mix the two solutions in such a way that the resulting mixture has a total volume of 5 liters, and the concentration of acid in the mixture is 10%.

Since we want 5 liters of the final mixture, we can write the following equation based on the conservation of volume:

x + y = 5

The total amount of acid in the final mixture should be 10% of the total volume of the mixture, so we can write the following equation:

0.04x + 0.28y = 0.1(5)

On simplifying:

0.04x + 0.28y = 0.5

From the first equation:

y = 5 - x

Substituting into second equation:

0.04x + 0.28(5 - x) = 0.5

Simplifying and solving for x:

0.04x + 1.4 - 0.28x = 0.5

-0.24x = -0.9

x = 3.75

Using first equation,

x + y = 5

3.75 + y = 5

y = 1.25

Therefore, she needs to use 3.75 liters of the 4% acid solution and 1.25 liters of the 28% acid solution to make 5 liters of a 10% acid solution.

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