Mathematics word problem. Working out would be really helpful. 20 points

Kilograms and pounds are two commonly used units of weight or mass.

The kilogram is the base unit of mass in the International System of Units (SI), while the pound is commonly used in the United States and other countries that use the imperial system. To convert from kilograms to pounds, you can multiply the weight in kilograms by 2.20462, since one kilogram is equivalent to 2.20462 pounds.

This conversion factor is useful in a variety of situations, such as when weighing people, animals, or objects in different parts of the world, or when calculating dosages of medications based on body weight.

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The probability of getting at least one head in two flips of a coin is 3/4 or 0.75, which means that there is a 75% chance of getting at least one head in two flips of a coin.

To find the probability of at least one head in two flips of a coin, we can use the complement rule. The complement of the event "at least one head" is "no heads."

The probability of getting no heads in two flips of a coin is (1/2) x (1/2) = 1/4.

Therefore, the probability of getting at least one head in two flips of a coin is:

1 - (probability of no heads) = 1 - 1/4 = 3/4

The probability of getting at least one head in two flips of a coin is 3/4 or 0.75, which means that there is a 75% chance of getting at least one head in two flips of a coin.

In other words, if you flip a coin twice, the probability of getting at least one head is relatively high, and you are more likely to get at least one head than to get no heads at all.

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We can convert milliseconds to seconds by using the formula 1 milliseconds = 10⁻³ seconds.

A second is the unit of time. One millisecond is also a unit of time but is it a smaller unit.

We know, Milli is corresponding to 10⁻³.

So, we can write the relation by using the concept of unit conversion.

10⁻³ second = one millisecond.

Now, for example, if we have 2 milliseconds, then it will be equal to 2 x 10⁻³ seconds.

So, now we have to standard formula and we can use it to find the value of the time in milliseconds to second and second to milliseconds.

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Answer:

Step-by-step explanation:

To solve for x in the equation:

x - 2/5 = 1/5

We can start by isolating x on one side of the equation. We can do this by adding 2/5 to both sides:

x - 2/5 + 2/5 = 1/5 + 2/5

Simplifying, we get:

x = 3/5

Therefore, the solution is:

x = 3/5

On solving the provided question, we can say that the perimeter can be calculated by add all lengths of the figure =  5.6 + 8+5.6+4.5+3.5 = 27.2units

A limit is a closed route that surrounds, delimits, or includes a two-dimensional form or a one-dimension length. The outermost part of a circle or an ellipse is called the perimeter. The perimeter calculation has several real-world applications. A shape's perimeter is the measurement of its edge's radius. Discover how to determine the circle by adding together the lengths of both the sides of irregular configurations. The perimeter of any form may be calculated by multiplying its side lengths. An object's perimeter is the region that surrounds it. A good illustration of this at your house is a closed-off garden. Its perimeter is the space around something. For a 50 by 50 foot yard, a 200 foot barrier will be required.

the perimeter can be calculated by add all lengths of the figure =

5.6 + 8+5.6+4.5+3.5 = 27.2units

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Answer:

0.0651

Step-by-step explanation:

To find 21% of 0.31, we can use the following formula:

21% × 0.31

We can convert the percentage to a decimal by dividing by 100:

0.21 × 0.31

Multiplying these two numbers, we get:

0.0651

Therefore, 21% of 0.31 is 0.0651.

The weight of 1 gallon water is 10 pounds and the weight of 1 litre of water is 1 kilogram.

Also, one kilogram is approximately equal to 2.2046226218 lbs.

One US gallon is equal to 3.785411784 liter.

A gallon is a unit of volume in imperial units and US standard units. Three different versions are currently in use:

imperial gallon (imp gallon), defined as

.5

609 liters, is or was used in Great Britain, Ireland, Canada, Australia, New Zealand and some Caribbean countries;

US gallons (US gallon), defined as 3.785

1178

L,[1] (231 cubic meters), used in the United States and some Latin American and Caribbean countries; and

US dry gallons ("usdrygal"), defined as 1⁄8 US Bushel (exactly

.

0

88377086 L).

There are two pints in a liter and four liters in a gallon. Different sized pints correspond to different sized imperial and US gallons.

The IEEE standard symbol for both US (liquid) and imperial gallons is gal [2], different from gal (symbol: Gal), the CGS unit of acceleration.

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Rounding to the nearest square unit, the area is approximately 21 square units.

A quadrilateral is a polygon with four sides, four vertices (corners), and four angles. Some examples of quadrilaterals include rectangles, squares, parallelograms, trapezoids, and rhombuses. Quadrilaterals can have sides and angles of different lengths and sizes. However, the sum of the angles in a quadrilateral always adds up to 360 degrees. Quadrilaterals are commonly studied in geometry, where their properties and characteristics are analyzed and used to solve various problems related to area, perimeter, and other geometric concepts.

Here,

To find the area of the figure ABCE, we need to find the height of the triangle ABCE with respect to base AB.

Let's call the point where the height meets base AB as D. Since angle E is 65 degrees, we know that angle AED is 180 - 65 = 115 degrees (since the sum of the angles in triangle AED is 180 degrees).

We also know that angle ADB is a right angle (since AD is perpendicular to AB), so angle EDB is 180 - 115 - 90 = 25 degrees.

Using trigonometry, we can find that the length of AD is:

AD = AB * sin(25) = 10 * sin(25) ≈ 4.24 units.

Therefore, the area of quadrilateral ABCE is:

Area = (1/2) * base * height = (1/2) * AB * AD ≈ (1/2) * 10 * 4.24 ≈ 21.2 square units.

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The image point of (-7, 5) after the translation is (-2, 9).

What is the translation in the coordinate system?

A translation in the Cartesian plane can be described by a rule that indicates how to move each point of a figure to its image under the translation. The rule is usually given as a pair of numbers (a, b), where a is the horizontal distance to move each point (positive to the right, negative to the left), and b is the vertical distance to move each point

To find the image point of the point (-7, 5) after a translation right 5 units and up 4 units, we need to add 5 to the x-coordinate and add 4 to the y-coordinate.

The new x-coordinate will be -7 + 5 = -2, since we're moving the point to the right 5 units.

The new y-coordinate will be 5 + 4 = 9, since we're moving the point up 4 units.

Hence, the image point of (-7, 5) after the translation is (-2, 9).

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The total area under the frequency polygon for a continuous random variable equals 1 is True.

A frequency polygon is very similar to a histogram, which is used to compare data sets or to depict a cumulative frequency distribution. A line graph is used to show quantitative data.

Statistics is concerned with the collecting of facts and information for a certain goal. The computation of each run for each ball in cricket provides game statistics. Tables, graphs, pie charts, bar graphs, histograms, polygons, and other graphical representations of statistical data are employed.

Frequency polygons are a visually appealing way of expressing quantitative data and frequency distributions. Let's look at how to draw a frequency polygon.

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By using the current currency exchange rate , the value of 120 Euros is equivalent to $128.4    .

The "Euro" is the official currency of the European Union, which includes 19 of its member states. and  The "US dollar", is official currency of the United States.

The Currency Exchange Rate between euros and dollars can vary depending on market conditions, but

The current exchange rate is approximately 1 euro = 1.07 US dollars.

By using this exchange rate, we can calculate that 120 euros is equal to ;

⇒ 120 euros × 1.07 US dollars/euro = 128.4 US dollars .

Therefore, 120 euros is equivalent to 128.4 US dollars at the current exchange rate.

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The length of 75cm converting to inches is 29.53 inches.

The inch is a unit of length commonly used in the United States, the United Kingdom, and some other countries. It can be calculated by using the conversion factor of 1 inch being equal to 2.54 centimeters.

Understanding conversions between different units of measurement is crucial in various fields such as science, engineering, and mathematics. Therefore, to convert centimeters to inches, we need to divide the number of centimeters by 2.54.

In this case, 75 cm divided by 2.54 results in 29.53 inches.

The length of 75 cm is equivalent to approximately 29.53 inches.

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Answer: 3.33 repeating

Step-by-step explanation: .

Both the 100kg of water and 100kg of paint weigh the same, since they both have a mass of 100kg.

From the question, we have the following parameters that can be used in our computation:

A  cup of water is lighter than a cup of paint

The initial comparison of a cup of water being lighter than a cup of paint cannot be used regarding the weight or mass of 100kg of either substance.

In this case, since both 100kg of water and 100kg of paint have the same mass,

They would also have the same weight if they were located in the same place with the same gravitational force acting upon them.

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a) The probability of finding oil is 0.70, or 70%.

b) The new probability of finding oil is the sum of the probabilities of finding high-quality oil and medium-quality oil, which is  1.00 or 100% .

(a) The probability of finding oil is the sum of the probabilities of finding high-quality oil and medium-quality oil, since both of these outcomes are considered positive for the oil company:

P(find oil) = P(high-quality oil) + P(medium-quality oil) = 0.50 + 0.20 = 0.70

Therefore, the probability of finding oil is 0.70, or 70%.

(b) To interpret the soil test, we can use Bayes' theorem:

P(Ai | S) = P(S | Ai) * P(Ai) / P(S)

where P(Ai | S) is the updated probability of finding oil given the soil test, P(S | Ai) is the probability of observing the soil test result given that there is oil of the corresponding quality, P(Ai) is the prior probability of finding oil of the corresponding quality, and P(S) is the probability of observing the soil test result regardless of the presence of oil.

Using the given probabilities, we can calculate:

P(S) = P(high-quality oil) * P(S | high-quality oil) + P(medium-quality oil) * P(S | medium-quality oil) + P(no oil) * P(S | no oil)

= 0.50 * 0.20 + 0.20 * 0.80 + 0.30 * 0.20

= 0.26

Now we can calculate the updated probabilities for each quality of oil:

P(high-quality oil | S) = P(S | high-quality oil) * P(high-quality oil) / P(S)

= 0.20 * 0.50 / 0.26

= 0.3846 or 0.38 (rounded to two decimal places)

P(medium-quality oil | S) = P(S | medium-quality oil) * P(medium-quality oil) / P(S)

= 0.80 * 0.20 / 0.26

= 0.6154 or 0.62 (rounded to two decimal places)

P(no oil | S) = P(S | no oil) * P(no oil) / P(S)

= 0.20 * 0.30 / 0.26

= 0.2308 or 0.23 (rounded to two decimal places)

The oil company should interpret the soil test as providing evidence for the presence of medium-quality oil, since the updated probability for this outcome is higher than the updated probability for high-quality oil. The revised probabilities for finding oil are:

P(find high-quality oil | S) = P(high-quality oil | S) = 0.38

P(find medium-quality oil | S) = P(medium-quality oil | S) = 0.62

P(find no oil | S) = P(no oil | S) = 0.23

Therefore, the new probability of finding oil is the sum of the probabilities of finding high-quality oil and medium-quality oil, which is:

P(find oil | S) = P(find high-quality oil | S) + P(find medium-quality oil | S)

= 0.38 + 0.62

= 1.00 or 100% (rounded to two decimal places)

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The booster club's lowest ticket price at which it can generate $3,600 in income is $20.

Its core idea is thought to be the figure is probably smallest equivalent fraction. Where to calculate the simplest form. Look for matching parameters in the denominator but also numerator. A uneven number can be checked to discover if it is a mathematical concept. A statement having two collinear and an equal sign in the middle is referred to as a mathematical model. Every variable's degrees are listed in lowest to highest in the general form of any equation. The model for a linear equation is x + b = 0. The general form of a two-variable linear equation is an x + b y + c = 0. (or something similar). Either conditional calculations or identities are categories for equations. An identity holds true for any real worth of the variables.

given

ticket price = p

total to make $3,600

the equation = 3600 = p(–4p+260) is the correct expression

lowest ticket price = 3600 = p(–4p+260)

= 3600 = -4p2 + 260p

= 4p2-260p + 3600

= 2p2 -130p + 1800

p2 - 65p + 900

(p-20 )(p-45)

p = 20

The booster club's lowest ticket price at which it can generate $3,600 in income is $20.

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Answer: Waffles: Total Number of Students is 21:56. Simplified it would be 3:8.

Step-by-step explanation:

First, you take the total number of students, which in this case is 56, and subtract it from the number of students who want the pancakes. The difference is 21. That is the number of students who want waffles.

The ratio is 21:56. It must be in that order. It is not the Total number of students: waffles, it is waffles: total number of students.

If it must be simplified, find the greatest common factor. In this problem, it is 7. So the simplified version is 3:8.

Reena's original speed as compared to her new speed concludes that Reena arrived at her destination in her planned amount of time which is 20 hours.

What is speed?

The distance travelled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.

Reena's original plan was to drive for 20 hours at an average speed of 50 mph, which means that she would have covered a distance of -

Distance = Speed x Time

Distance = 50 mph x 20 hours

Distance = 1000 miles

Now calculate the distance that Reena actually traveled.

She drove at an average speed of 60 mph for the first 5 hours, covering a distance of -

Distance1 = Speed1 x Time1

Distance1 = 60 mph x 5 hours

Distance1 = 300 miles

For the remaining 15 hours of the journey, she drove at an average speed of 50 mph, covering a distance of -

Distance2 = Speed2 x Time2

Distance2 = 50 mph x 15 hours

Distance2 = 750 miles

The total distance that Reena traveled is the sum of the two distances -

Total Distance = Distance1 + Distance2

Total Distance = 300 miles + 750 miles

Total Distance = 1050 miles

Reena actually traveled 1050 miles to reach Chicago, which is 50 miles more than her planned distance of 1000 miles.

To calculate how much earlier Reena arrived in Chicago than she originally planned, we need to compare the time it took her to travel the two distances -

Time1 = Distance1 / Speed1

Time1 = 300 miles / 60 mph

Time1 = 5 hours

Time2 = Distance2 / Speed2

Time2 = 750 miles / 50 mph

Time2 = 15 hours

Total Time = Time1 + Time2

Total Time = 5 hours + 15 hours

Total Time = 20 hours

Reena arrived in Chicago in 20 hours, which was exactly the same as her original plan.

Therefore, she did not arrive earlier than planned.

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There is each person holding the sign for 3/4 hours.

What is the rate?

A rate is a type of ratio that compares two values with distinct units. A rate is expressed as a fraction.

Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.

The 4 members of a robotics team held a car wash to raise money. To attract customers, each person held a sign by the road for an equal portion of the car wash, which lasted 3 hours in all.

If the car wash lasted 3 hours in all and there are 4 members in the robotics team, each person held the sign for 3 hours / 4 = 3/4 hours.

Hence, there are each person held the sign for 3/4 hours.

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Answer:

2 hours

Step-by-step explanation:

1 hour from before she does her soccer practice and another 1 hour after her soccer practice so it's going to be

1+1=2

Answer: she works on her homework in total for 2 hours.

Step-by-step explanation: 1+1=2, 60 minutes are in 1 hour, 60+60=120 minutes= 2 hours

Answer:

30^

Step-by-step explanation:

To write 0.3 as a percent, multiply 0.3 by 100. Append % symbol in the product obtained. So, 0.3 as a percent is 30 %. We can write in just two steps to calculate any decimal into a percent.

Answer:

68

Step-by-step explanation:

Looking at the pattern of what is given for the bottom section.  I can count two sections as being 6 blocks and then between those sections I would count 4 blocks.  This would be true for the bottom and the top.  The middle holding up the top and the bottom would need 4 more blocks for each "pillar"

2(6 + 6 + 4 + 4) + 4(4) = 56

If I use that same patter with the new structure

2(7 + 7 + 5 + 5) + 4(5) = 68

Answer:

68

Step-by-step explanation:

We know that a cube has 8 corners. So that's 8 cubes just for the corners. We also know that a cube has 12 edges. An edge can be calculated by subtracting 2 from the side length. Since the side length is 7 cubes long, the edge length is 5 cubes long. The total number of cubes is:

N = (number of corner * cubes per corner) + (number of edges * cubes per edges)

[tex]N = (8 * 1) + (12 * 5) = 8 + 60 = 68[/tex]

The two-sample t-test is a statistical test used to compare the means of two independent groups to determine if they are significantly different from each other.

The null hypothesis in a two-sample t-test states that there is no significant difference between the means of the two groups.

The test is performed by calculating the t-statistic, which is a ratio of the difference between the means of the two groups and the standard error of the difference. The t-statistic is then compared to a critical value from the t-distribution with degrees of freedom equal to the sum of the sample sizes minus 2.

If the calculated t-statistic is greater than the critical value, then the null hypothesis is rejected, and it is concluded that there is a significant difference between the means of the two groups. If the calculated t-statistic is less than the critical value, then the null hypothesis is not rejected, and it is concluded that there is not enough evidence to suggest a significant difference between the means of the two groups.

Therefore, the 2 sample t-test of null hypothesis has been explained

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The greatest common factor (GCF) of 42, 126, and 210 is 42.

To find the GCF, you can use several methods such as prime factorization or the Euclidean algorithm. One way to find the GCF using prime factorization is to express each number as a product of its prime factors:

42 = 2 × 3 × 7

126 = 2 × 3² × 7

210 = 2 × 3 × 5 × 7

Then, identify the common prime factors and their smallest exponent across all three numbers. In this case, the common prime factors are 2, 3, and 7. The smallest exponent of 2 is 1, the smallest exponent of 3 is 1, and the smallest exponent of 7 is 1. Therefore, the GCF is

= 2 × 3 × 7

= 42

Another method to find the GCF is the Euclidean algorithm, which involves finding the remainder of dividing the larger number by the smaller number repeatedly until the remainder is zero. The GCF is the last nonzero remainder. However, in this case, the prime factorization method is simpler and quicker.

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no of students in each van = 6

no. of students in each bus = 42

This can be solved by equation solving.

An equation is a formula in mathematics that uses the equals sign (=) to represent the equality of two expressions.

Given that,

Let, x = no. of students in van

y = no. of students in bus

According to the question:

5x + 4y = 198 .............. (1)

4x + 3y = 150 ............. (2)

Multiply equation (1) by 4 and equation (2) by 5 we get:

20x + 16y = 792

20x + 15y = 750

now after subtractions:

or, y = 42

putting the value of y in equation (1) we get:

5x + 4(42) = 198

or, 5x + 168 = 198

or, 5x = 30

or, x = 6

Thus, no of students in each van = 6

no. of students in each bus = 42

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Using the conversion factor, 3 1/3 yards is equal to 120 inches

To convert yards to inches, we need to know the conversion factor between these two units. One yard is equal to 36 inches.

Therefore, to convert 3 1/3 yards to inches, we can use the following steps:

Convert the whole number of yards to inches: 3 yards x 36 inches/yard = 108 inches

Convert the remaining fraction of a yard to inches: 1/3 yard x 36 inches/yard = 12 inches

Add the results of steps 1 and 2 to get the total number of inches: 108 inches + 12 inches = 120 inches

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Answer:

Since there are (12) inches in 1 yard (divide) 3 1/3 by (36)

so 3 1/3 yards = (16) inches.

Step-by-step explanation:

when you see (   ) it means it's the Answer

The proof for the given statements is as follows:

Statements:

1. overline AB || overline PQ

2. overline AP || overline BQ

3. overline BP || overline CQ

Reasons:

1. Since AB || PO, then AB || PQ

2. Since AP || BQ and AB || PQ, then AP || BQ

3. Since BP || CQ and AB || PQ, then BP || CQ

Therefore, by the properties of parallel lines, we can conclude that angle ABP congruent to angle BCQ and angle BAP congruent to angle CBO. Since angles ABP and BCQ are congruent, and angles BAP and CBO are congruent, this implies that angle ABP is congruent to angle QPB, and angle CBQ is congruent to angle PQB.

By the definition of similar triangles, two triangles are said to be similar if their corresponding angles are congruent. Therefore, triangle ABP is similar to triangle QPB, which is similar to triangle BCQ, proving the statement.

The derivative of cubed root X is:

  [tex]\frac{1}{3\sqrt[3]{X^{2} } }[/tex]

To find the derivative of cubed root X, we can use the power rule. The power rule states that the derivative of Xⁿ is nX⁽ⁿ⁻¹⁾. In this case, the cubed root of X can be written as X^(1/3).

Using the power rule, we can find the derivative:

[tex]\frac{d}{dx} (X^{1/3} )= \frac{1}{3} (X^{(1/3) - 1})[/tex]

Simplifying the exponent gives us:

[tex]\frac{d}{dx} (X^{(1/3)}) = \frac{1}{3}X^{-2/3}[/tex]

Finally, we can rewrite the expression to get rid of the negative exponent:


[tex]\frac{d}dx}(X^{(1/3)}) = \frac{1}{3\sqrt[3]{X^{2} } }[/tex]

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(a) The fraction of his money spend on a book is 12/40 = 3/10

Money spent on books

3/5 = x/2

3/5 = 40/2

Hence, at a fraction of money is 12/40 = 3/10

(b) Roy has money at first is $40

Roy spent money on game boys = 1/2

He spent money on books = 3/5

Let Roy has money = x

Money on game boys

= 1/2 of x = x/2

Money spent on books

= 3/5 = x/2

= 3x/10

= x/2 - 3x/10

= 5x/10 - 3x/10

= 2x/10

But the remaining money = $8

= x/5 = 8

= x = 40

Therefore, Roy has money at first = $ 40

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The value of N is 90 and the value of F is 80 degrees

From the question, we have the following parameters that can be used in our computation:

Similar Polygons

This means that

Angle N = Angle J

So, we have

Angle N = 90 degrees

Here, we have

F = K

So, we have

Angle F = 80 degrees

To do this, we use the following ratio

x : 12 = 9 : 18

So, we have

x/12 = 9/18

Evaluate

x = 6

To do this, we use the following ratio

y : 18 = 10 : 12

So, we have

y/18 = 10/12

Evaluate

y = 15

Here, we have

Given ratio = 6 : 7

This means that

The ratio of the perimeter is 6 : 7

Here, we have

Ratio = 5 : 2

So, we have

JKL : 35 = 5 : 2

This gives

JKL : 35 = 35 : 14

Hence, the perimeter is 35 units

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