The number of hours you study for an exam affects your grade. What is a reasonable value of the range?

Answer: I’m pretty sure it’s c

Step-by-step explanation:

The slope and y - intercept of the line of best fit are 1.22 and -0.09 respectively.

a.

To fill the table of the residuals, we can approach it as;

residual = food waste - number of people.

3.2 - 2 = 1.4

2.5 - 3 = -0.5

8.9 - 4 = 49

4.7 - 4 = 0.7

3.5 - 4 = -0.5

4 - 4 = 0

5.3 - 5 = 0.3

4.6 - 5 = -0.4

7.8 - 5 = 2.8

3.2 - 6 = -2.8

12 - 8 = 4

b.

The equation is given as;

y = 1.22x - 0.09

The slope of the line of best fit is 1.22

c.

The y - intercept is given as -0.99

Learn more on line of best fit here;

https://brainly.com/question/1564293

#SPJ1

There are 2 tablespoons in 1 fluid ounce. This conversion is often used in cooking and baking recipes, where ingredients are measured in ounces or tablespoons.

Fluid ounces and tablespoons are both units of volume used to measure liquids in cooking and baking recipes. One fluid ounce is equal to 29.5735 milliliters or approximately 2 tablespoons, which is equivalent to 6 teaspoons. Therefore, there are 2 tablespoons in 1 fluid ounce.

This conversion is important to know when following recipes that call for ingredients in fluid ounces or tablespoons. It allows for accurate measurement of ingredients, which is crucial for successful cooking and baking. Other common units of volume used in the kitchen include teaspoons, cups, and quarts, among others.

Learn more about ounce:

https://brainly.com/question/29374025

#SPJ4

The value of measuring mass 145 kilograms to pounds after conversion as per standard measurements  is equal to kilograms  319.7 pounds ( round off to one decimal )

Kilograms and pounds are related in standard form as given below :

1 kilograms = 2.20462 pounds ___(1)

Substitute the value 145 kilograms in (1) for the conversion into pounds form we have :

⇒ (  145 ) kilograms = ( 145 multiply to 2.20462 ) pounds

⇒ 145 kilograms = 319.67 pounds

Finally ,

145 kilograms = 319.7 pounds ( round off to one decimal )

Therefore, after conversion the given unit of mass kilograms into pounds is  145 kilograms = 319.7 pounds ( round off to one decimal ).

Learn more about conversion here

brainly.com/question/24166407

#SPJ4

Answer: this is true

Step-by-step explanation:

To find the equation of the tangent plane to the parametric surface, we need to find the partial derivatives of x, y, and z with respect to u and v, evaluate them at the point (u, v) = (2, 1), and use them to construct the equation of the tangent plane.

The partial derivatives of x, y, and z with respect to u and v are:

∂x/∂u = 1, ∂x/∂v = 1

∂y/∂u = 10u, ∂y/∂v = 0

∂z/∂u = 1, ∂z/∂v = -1

Evaluating these partial derivatives at (u, v) = (2, 1), we get:

∂x/∂u = 1, ∂x/∂v = 1

∂y/∂u = 20, ∂y/∂v = 0

∂z/∂u = 1, ∂z/∂v = -1

So the normal vector to the tangent plane is:

N = <1, 20, 1> × <1, 0, -1> = <-20, 0, -20>

This normal vector is perpendicular to the tangent plane, so the equation of the tangent plane can be written as:

-20(x - 2) + 0(y - 5) - 20(z - 0) = 0

Simplifying this equation, we get:

-20x + 20z = -40

Dividing both sides by -20, we get:

x - z = 2

Therefore, the equation of the tangent plane to the given parametric surface at the point (2, 5, 0) is x - z = 2.

To know more about parametric :-

brainly.com/question/15585522

#SPJ4

If the boat needed to travel 15 miles there and back, while the stream only moves 5 miles per hour, it would take 3 hours to travel there and back. This means that in still water, the boat would take 6 hours to move 15 miles upstream and back.

The density of water is 1 gram per milliliter, which means that 1 milliliter of water weighs 1000 milligrams (1 gram).

Milligrams (mg) and milliliters (ml) are two different units of measurement used for different purposes. Milligrams are used to measure mass or weight, while milliliters are used to measure volume or capacity.

The conversion between milligrams and milliliters depends on the density of the substance being measured. The density is a measure of the amount of mass per unit of volume.

In general, the conversion between milligrams and milliliters is not straightforward and requires knowing the density of the substance being measured. However, for liquids with a density of approximately 1 gram per milliliter, 1 milliliter is equivalent to 1000 milligrams.

Learn more about milligrams at

https://brainly.com/question/29346047

#SPJ4

The critical value, zα/2, that corresponds to a 87% confidence level is approximately 1.514.

The critical value, zα/2, is the z-score that cuts off an area of α/2 in the tails of the standard normal distribution. In other words, it represents the number of standard deviations away from the mean that corresponds to a particular level of confidence.

To find the critical value for a 87% confidence level, we first need to determine the area that is left in the tails of the distribution. Since the confidence level is 87%, the area in the middle of the distribution is (1 - 0.87) = 0.13. We then divide this area in half to get the area in each tail, which is 0.065.

Using a standard normal distribution table or a calculator, we can find that the z-score that cuts off an area of 0.065 in one tail is approximately 1.514. Therefore, the critical value, zα/2, is:

zα/2 = ±1.514

However, since we want to find the z-score that corresponds to the middle 87% of the distribution, we need to add the absolute value of this number to the mean of the distribution, which is 0. This gives us:

zα/2 = |1.514| = 1.514

Therefore, the critical value, zα/2, that corresponds to a 87% confidence level is approximately 1.514

To know more on critical value

https://brainly.com/question/30168469

#SPJ4

--The question is incomplete, answering to the question below--

"Find the critical value, zα/2 that corresponds to the given confidence level 87​%"

Step-by-step explanation:

What is the electric potential at the centre of square of side 1 m ? the changes 1 x 10^-8c , - 2 x 10^-8 c, 3 x 10^-8 c and 2 x 10^-8 c are placed at the corners

The expansion of (2x+3y) ∧ 6 will contain 7 terms.

The expansion of [tex](2x+3y)^6[/tex] will contain 7 terms.

To see why, consider the binomial theorem, which tells us that the expansion of [tex](a + b) ^n[/tex] will have (n+1) terms, where the first term has coefficient 1 and the last term has coefficient 1.

In the case of [tex](2x+3y)^ 6[/tex], we can think of this as the expansion of [tex](2x + 3y) ^6 as (2x) ^ 6 + 6(2x) ^ 5(3y) + 15(2x) ^ 4(3y) ^ 2 + 20(2x) ^ 3(3y) ^3 + 15(2x) ^2(3y) ^ 4 + 6(2x)(3y) ^5 + (3y) ^6.[/tex]

As we can see, there are seven terms in this expansion, each with a different combination of powers of 2x and 3y. Therefore, the expansion of [tex](2x+3y)^ 6[/tex] will have 7 terms.

In mathematics, an expression is a combination of numbers, variables, and mathematical operations such as addition, subtraction, multiplication, division, exponentiation, or roots.

Expressions are used to represent numerical or algebraic quantities, and they can be as simple as a single number or variable, or as complex as a polynomial or rational function.

For example, the expression 2 + 3 represents the sum of 2 and 3, and the expression 3x - 7 represents the result of multiplying x by 3 and then subtracting 7.Expressions can be evaluated by following the order of operations, which tells us to perform operations in a specific order (parentheses, exponents, multiplication and division from left to right, and addition and subtraction from left to right).

Expressions can also be simplified or manipulated using algebraic rules and properties to make them easier to work with or to solve equations involving them.

To know more about expression visit :

https://brainly.com/question/1859113

#SPJ1

The binomial probability distribution is a discrete probability distribution that describes the probabilities of two independent outcomes in an experiment. A Poisson probability distribution is a discrete distribution whereby the stochastic process x makes a difference the number of occasions that an event occurs in a given interval.

Is the result of such a laboratory activity a probability distribution?

A probability distribution consists of a table or an equation that associates each output of a random experiment with the likelihood of its event occurring. Consider the following simple experiment: we toss a coin twice. The experiment could result in the head count being equal in 2 different coin flips.

What are the two binomial distribution outcomes?

Binary Distribution

Each trial yields one of two outcomes: success or failure. The success probability, denoted by p, remains constant from trial to trial. The n trials are autonomous.

To know more about equation click here

brainly.com/question/649785

#SPJ4

The length of the hypotenuse is 8√2 units.

According to the Pythagoras theorem, we can write -

        (hypotenuse)² = (base)² + (perpendicular)²

        (h)² = (b)² + (p)²

Given is a 45 - 45 - 90 triangle with a leg length of 8.

Equal Opp. Angles Theorem -

We can write using the Pythagoras theorem as -

x² = 8² + 8²

x² = 64 + 64

x² = 128

x = √(2 x 2 x 2 x 2 x 2 x 2 x 2)

x = √(2² x 2² x 2² x 2 )

x = 8√2

Therefore, the length of the hypotenuse is 8√2 units.

To solve more questions on Pythagoras theorem, visit the link below -

https://brainly.com/question/27911936

#SPJ1

There will be approx four teaspoons of US measurement system in 20 ml. That is the unit conversion of 20 mililitre is equals to four teaspoons.

A milliliter is a unit of volume equal to 1/1000 of a liter. It is the same as a cubic centimeter. A US teaspoon is a unit of volume in the cooking system that is equal to 1/3 of a tablespoon or 1/48 of a US cup. To calculate the value in milliliters to the corresponding value in teaspoons [US], multiply the amount in milliliters by 0.2028841362 (conversion factor). Here is the formula: Value in teaspoons [US]

= value in milliliters × 0.2028841362

Now we need to convert 20 ml to teaspoons. So using the above formula we can write the number of teaspoons in 20 ml is Value in teaspoons [US]

= value in milliliters × 0.2028841362

= 20 ml × 0.2028841362

= 4.057682724 ~ 4

Hence required value is 4 teaspoons.

To learn more about unit conversion visit:

https://brainly.com/question/13016491

#SPJ4

The conversion of 240 minutes in hours is 4 hours.

Hours and minutes are units of time used to measure the duration of events or the amount of time that has elapsed. An hour is a unit of time equal to 60 minutes or 3,600 seconds. It is typically used to measure the duration of longer events, such as a movie, a class, or a workday.

To convert 240 minutes to hours, you can divide 240 by 60 (since there are 60 minutes in one hour).

240 minutes / 60 = 4 hours

Therefore, 240 minutes is equivalent to 4 hours.

To learn more about hours here:

https://brainly.com/question/13533620

#SPJ4

The value of y is 9

Perimeter is the distance around the edge of a shape. Learn how to find the perimeter by adding up the side lengths of various shapes.

Therefore, the perimeter of a rectangle can be expressed as:

P = 2(l+b)

l = 4y

b = 3y+3

132 = 2(4y+3y+3)

132 = 2( 7y+3)

132 = 14y +6

14y = 132 -6

14y = 126

divide both sides by 14

y = 126/14

y = 9

therefore the value of y is 9

learn more about perimeter from

https://brainly.com/question/19819849

#SPJ1

The value of y in the rectangle shown is: y = 7.

The perimeter of a rectangle = 2(length + width)

Given the following as shown in the image attached below:

Length of rectangle = 5y + 3

Width of rectangle = 4y

Perimeter = 132 units

Plug in the values:

132 = 2(5y + 3 + 4y)

Solve for y:

132 = 2(9y + 3)

132 = 18y + 6

132 - 6 = 18y

126 = 18y

126/18 = y

7 = y

y = 7

Learn more about perimeter of rectangle on:

https://brainly.com/question/24571594

#SPJ1

MN = 17.09 cm

NMV = 16.31°

A cuboid is a six-sided solid known as a hexahedron in geometry. Quadrilaterals make up its faces. Cuboid is short for "like a cube." A cuboid is similar to a cube in that a cuboid can become a cube by varying the lengths of the edges or the angles between the faces.

MV = 1/2 VS = 6cm (midpoint)

NV= 1/2YV = 5cm (midpoint)

MV = [tex]\sqrt{MV^2 + UV^2} = \sqrt{6^2 + 16^2} = 17.09cm[/tex]

MN = [tex]\sqrt{MU^2 + NU^2} = \sqrt{6^2 + 16^2 + 5^2} = 17.80cm[/tex]

tanNMV= 5/17.09

= 16.31°

Read more about cuboids here:

https://brainly.com/question/29568631

#SPJ1

Answer:

Step-by-step explanation:

Lets set up a table to keep the information organized.  See the attached table.

There are 6 recipients:  1 cat and 5 nieces.  But since one of the nieces gets an extra 5%, let's treat the extra amount as a separate recipient, which is lablelled N' in the table (Green arrow).  Now enter the percentages for each recipient group.  The percentages for the cat and N', the extra for the youngest niece, are 35% and 5%, as noted.  That leaves 60% to be equally divided among the 5 nieces (including the youngest one who get an additional 5%).  [Note that the 5% extra for niece N' was removed from the total before the remainder can be evenly split amoung the 5 nieces.]

The percentages are multiplied by the total of $38,000 to yield the amounts shown on the table.  

                      Cat:   $13,300

4 younger nieces:   $ 4,560 each  ($18,240) total

    Oldest niece:      $ 6,440

                                  ======

                                                          $38,000 total

[Footnote:  the oldest niece adopted the cat]

The amount of money that the cat inherits and other niece would be =$13,300 and $24,700 respectively.

The total amount of money that is the worth of the estate of Uncle Scrooge = $38000

The amount of money that goes to the cat = 35% of $38000.

That is;

= 35/100× 38000

= 1330000/100

= 13,300

The amount of money that will be received by the remaining niece = 38000-13300 =$24,700

Learn more about division here:

https://brainly.com/question/25289437

#SPJ1

Answer: 40

Step-by-step explanation:

20% = 0.2

0.2 x 200 = 40

You kayak 140 feet further in 5 minutes going downstream than you do in 5 minutes going upstream.

Speed is determined by dividing the distance traveled by the time taken to travel it. It gives the distance traveled and the amount of time it took to travel that distance.

Speed is directly Proportional to Distance and Inversely proportional to Time. Hence,

Distance = Speed X Time.

Given: You paddle a kayak 168 feet up a river every two minutes.

Hence, 168/2 = 84 feet per minute.

Therefore you go up  84 feet in one minute.

You reach 84*5 = 420 feet in 5 minutes.

Given: As you paddle back down the river, you cover 56 feet every 30 seconds.

Speed is determined by distance traveled divided by time, therefore when traveling downward, 56/0.5 equals 112 feet per minute.

In one minute, you descend by 112 feet.

You descend 560 feet in 5 minutes, or 5*(112) feet.

As a result, you will move on 140 feet (560 - 420)=140 feet further .

To learn more about time, speed, and distance, go to:

https://brainly.com/question/10566304

#SPJ1

The right choice for the equation is y+9=4(x-3). The Option B is correct..

An equation of the line refers to a linear equation having a degree of one. The equation contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.

First thing to do is to solve each of these for y.  The first one is y=-4x-3; the second one is y=4x-21; the third one is y=4x+21; the fourth one is y=-4x+3.  From that, you can tell the positive slopes are found in the second and third equations.  

Those are the ones we will test now for the point (3, -9).  y=-9 and x=3, so let's fill in accordingly.  The second equation filled in is -9=4(3)-21.  

-9=12-21 and -9=-9.  So the second one works.  Just for the sake of completion, let's do the same with the third: -9=4(3)+21.  Does -9=12+21?  Of course, it doesn't. Our equation is the second one above, y+9=4(x-3).

The complete question is given below:

Select the equation that contains the point (3, -9), and in which the graph of the line has a positive slope.

y – 9 = –4(x + 3)

y + 9 = 4(x – 3)

y – 9 = 4(x + 3)

y + 9 = –4(x - 3)

Read more about equation of the line

brainly.com/question/18831322

#SPJ1

Answer:

a) The probability that the first two people share a birthday is 0.97 or 97%.

b) The probability that at least two people share a birthday is 0.99 or 99%.

c) The probability that all three people share a birthday is 0.0015 or 0.15%.

d) The probability that at least one pair of 15 people share a birthday is 0.58 or 58%.

e) The probability that at least one pair of 23 people share a birthday is 0.87 or 87%.

The area of the figure composed of the square and four semicircles is approximately 242.4 square units.

A semicircle is a two-dimensional geometric shape that is half of a circle. It is formed by drawing a diameter of a circle and then drawing the arc that connects the two endpoints of the diameter. The diameter divides the circle into two equal parts, each of which is a semicircle.

A semicircle has several important properties, including:

It has one straight side, which is the diameter of the circle.

The other side is curved, and it is a half-circle.

The radius of the semicircle is equal to half the diameter of the circle.

The circumference of a semicircle is half the circumference of the circle.

The area of a semicircle is half the area of the circle.

Semicircles are used in many applications of geometry and trigonometry, including in the study of angles, arcs, and circles. They are also used in architecture and engineering to design buildings, bridges, and other structures that have semicircular features.

In addition to being a geometric shape, a semicircle can also refer to a half-circle that is used as a decorative element or design motif. Semicircles are often used in art, architecture, and graphic design to create visually interesting patterns and compositions.

To find the area of the figure composed of a square and four semicircles, we need to first find the area of the square and the area of the four semicircles. Then, we can subtract the area of the four semicircles from the area of the square to get the total area of the figure.

The area of the square is simply the side length squared, so in this case it is:

Area of square = (22)^2 = 484 square units

The diameter of each semicircle is equal to the side length of the square, so the radius is half of that or 11 units. Therefore, the area of each semicircle is:

Area of semicircle = (1/2) * π * r^2 = (1/2) * π * 11^2 = 60.4 square units

Since there are four semicircles, the total area of the four semicircles is:

Total area of semicircles = 4 * Area of semicircle = 4 * 60.4 = 241.6 square units

To get the area of the entire figure, we need to subtract the area of the four semicircles from the area of the square:

Area of figure = Area of square - Total area of semicircles

Area of figure = 484 - 241.6 = 242.4 square units

Rounding this to the nearest tenth gives:

Area of figure = 242.4 (rounded to the nearest tenth)

Therefore, the area of the figure composed of the square and four semicircles is approximately 242.4 square units.

To know more about area visit:

https://brainly.com/question/12187609

#SPJ1

The volume of the composite figure would be 120 m³.

An algebraic expression is a combination of terms both constants and variables. For example -

2x + 3y + z

3x + y

Given is the composite figure as shown in the image.

We can write the volume of the image as -

V = {6 x 5 x 2} + {1/2 x 5 x 4 x 6}

V = {60 + 60}

V = 120 m³

Therefore, the volume of the composite figure would be 120 m³.

To solve more questions on Volumes, visit the link below

brainly.com/question/29014197

#SPJ1

The probability that a randomly selected score from this normal distribution is less than x = 76 is 0.6915

To find the probability that a randomly selected score from a normal distribution with mean µ = 70 and standard deviation σ = 12 is less than x = 76,

we need to use the standard normal distribution and calculate the z-score corresponding to x = 76, and then look up the corresponding area under the standard normal curve using a standard normal distribution table.

The z-score is calculated as:

z = (x - µ) / σ

z = (76 - 70) / 12

z = 0.5

By using a standard normal distribution table, we can find the area under the curve to the left of z = 0.5, which is 0.6915.

Therefore, the probability that a randomly selected score from this normal distribution is less than x = 76 is 0.6915 or approximately 69.15%.

To learn more about probability:

https://brainly.com/question/13604758

#SPJ4

A chi-square distribution table is a table that lists critical values for the chi-square distribution.

The chi-square distribution is a probability distribution that is used in statistical hypothesis testing to test whether a set of observed data is consistent with a specified theoretical distribution.

The table is used to find the probability that the chi-square statistic computed from the data is greater than or equal to a given critical value. The critical values depend on the degrees of freedom (df), which are determined by the number of categories in the data.

The chi-square distribution table lists the critical values for various degrees of freedom and levels of significance. For each level of significance (e.g., 0.05 or 0.01),

The table provides the critical value for each degree of freedom. To use the table, you need to determine the degrees of freedom for your data and then find the appropriate critical value for the desired level of significance.

Learn more about chi-square distribution here

brainly.com/question/30259945

#SPJ4

As per the exchange rate, 4.5 million YEN is equivalent to 41,145 USD.

The first step in converting currency is to determine the current exchange rate between the two currencies. In this case, we will need to find the exchange rate between Japanese yen (JPY) and US dollars (USD). As of writing this, the exchange rate is 1 USD = 109.62 JPY.

Next, we will use the conversion factor to convert 4.5 million JPY to USD. To do this, we need to multiply the amount of JPY by the conversion factor, which is the exchange rate.

1 USD / 109.62 JPY = 0.00913 USD/JPY

Now, we can use this conversion factor to convert 4.5 million JPY to USD.

4.5 million JPY * 0.00913 USD/JPY = 41,145 USD

Therefore, 4.5 million JPY is equivalent to 41,145 USD.

In conclusion, converting currency from one form to another may seem challenging, but with the help of conversion factors, it becomes simple. Just remember to multiply the amount of the original currency by the conversion factor to get the equivalent value in the desired currency.

To know more about conversion factor here.

https://brainly.com/question/30166433

#SPJ4

The number 5/8 as a decimal is 0.625

As we divide a whole into smaller parts, we get decimals. Hence, there are two parts to a decimal number: a whole number part and a fractional part. The whole component of a decimal number has the same decimal place value system as the complete number. After the decimal point, however, when we proceed to the right, we obtain the fractional portion of the decimal number.   

An informal way to read a decimal is to first read the whole number as you would any whole number, then the decimal point as "point," and finally each individual digit of the rational part.

the decimal of 5/8 is

5÷8 = 0.625

know more about decimal click here;

https://brainly.com/question/18744986

#SPJ4

It should be noted that the value of the angles will be m<2= 101; m<1=79°.

It should be noted that if parallel lines are intersected by a transversal, the correspondng angles are congruent

Supplementary angles are those angles that sum up to 180 degrees. For example, angle 130° and angle 50° are supplementary angles because sum of 130° and 50° is equal to 180°.

In this case, m2 = 180 - 79

= 101°

Learn more about angles on;

https://brainly.com/question/25716982

#SPJ1

Try using Socratic and it may help