HELPPPP MATH 20 pointssss

Answer:

Hello!

2pi R

2*3,14 *1 = 6,28

6,28/4 => 1,57

We have the following:

We must calculate the value of z

a.

x, is the value to evalute (0.8 - 1)

m, is the mean (0.88)

s, is the standard deviation (0.3)

n, is the sample size (36)

Therefore, the probability is 0.258 or 25.8%

b.

x, is the value to evalute (0.8 - 1)

m, is the mean (0.88)

s, is the standard deviation (0.3)

n, is the sample size (36)

replacing:

Therefore, the probability is 0.937 or 93.7%

The new temperature of a gas will be 324.38k .

The Ideal Gas Equation defines the four gas variables and one constant for a better understanding. The four gas variables are pressure (P), volume (V), number of moles of gas (n), and temperature (T). Lastly, the constant in the equation shown below is R, known as the gas constant.

PV=RT

at constant pressure

    V∝T

   \(\frac{V_{1} }{V_{2} } = \frac{T_{1} }{T_{2} }\)

According to the question,

\(V_{1} = 7.3 litres\) , \(V_{2} = 7.4 litres, T_{1} = 320k\)

⇒ \(\frac{7.3}{7.4} = \frac{320}{T_{2} }\)     (substitute the values)

⇒ \(T_{2} =\frac{320 * 7.4}{7.3}\)

⇒ \(T_{2} =324.38\)

Hence, the new temperature will be 324.38k.

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Answer:

  increasing at 4 miles per hour

Step-by-step explanation:

Given a police car is 3 miles east of an intersection traveling at 100 mph toward it, and a truck is 4 miles north of that intersection traveling at 80 mph away from it, you want to know the rate at which the straight-line distance between them is changing.

The formula for the distance between the vehicles as a function of time is ...

  d(t)² = x(t)² +y(t)²

At t=0, we have x = 3 and y = 4, so ...

  d² = 3² +4² = 9 +16 = 25

  d = √25 = 5

Differentiating gives ...

  2d·d' = 2x·x' +2y·y'

  d' = (x·x' +y·y')/d

At t=0, x is decreasing at 100 mph, while y is increasing at 80 mph. That means the value of this equation is ...

  d' = (3·(-100) +4·(80))/5 = (-300 +320)/5 = 4

The distance between the vehicles is increasing at 4 miles per hour.

__

Additional comment

After 0.03 hours = 1.8 minutes, the police car reaches the intersection. After it turns north, the distance between the vehicles will be 6.4 miles, decreasing at 20 mph. The police car will catch the truck after 0.35 hours, or 21 minutes, from the time we began this scenario. At that point, the truck will be 32 miles north of the intersection.

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Answer:

7.16666666667

Step-by-step explanation:

Answer:

? = 2

Step-by-step explanation:

3x + 6 = 3(x + 2)

3x + 6 = 3x + 2

So, the answer is 2.

Answer:

-n+t equal to 6 is the answer to that question

Answer:

The number of $5 bills is 6

The number of $1 bills is 8

Step-by-step explanation:

Given the number of $1 bills is x, and of $5 bills is y

Then x + y = 14 or x = 14 - y

And 1(x) + 5(y) = 38

then 1(14 - y) + 5y = 38

14 - y + 5y = 38

4y = 38 - 14

4y =24

y = 6

if the number of $5 bills is 6

then the number of $1 bills is 14 - 6 = 8

Answer:

correct

Step-by-step explanation:

you got it right

Answer:

Its

Step-by-step explanation:

not it's because it's is the same thing as it is

Answer:

If its just 15 then its 1

Step-by-step explanation:

Because 15 divided by 1 is 15 which is the fraction.

Answer:

Below,...!

Step-by-step explanation:

15 is not a fraction as is you can put any number over a one and that whole number immediately becomes a fraction:

\(\frac{7}{1} or \frac{43}{1} or \frac{987}{1} or \frac{1}{1} or \frac{15}{1}\)

15/1 is your fraction so 15/1 divided into 15 equals 1

\(\frac{15}{1} / 15 = 1/1 = 1\)

Answer: 1

Chow,...!

Answer:

48 square meters

Step-by-step explanation:

cause if u  4m x 12m =48

Answer:

48 square meters

Step-by-step explanation:

The equation used to solve this is a= wl (area equals length times width)

Therefore, all you have to do is multiply 12 and 4 to get the area of the rectangle.

12 times 4= 48

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Have a great day!

Answer:

-2

Step-by-step explanation:

3( x+ 2)=2(x+2)​

=>3x+6=2x+4

=>3x-2x=4-6

=>x=-2

-2  is the value of x

Answer:

The answer is

Step-by-step explanation:

3( x+ 2)=2(x+2)

First expand the terms in the bracket

That's

3x + 6 = 2x + 4

Group like terms

Send the constants to the right side of the equation and those with variables to the left side

3x - 2x = 4 - 6

Simplify

We have the final answer as

Hope this helps you

Thus, the volume of the given oblique pyramid is found as 230 cu. ft.

A pyramid is a 3D polyhedron having three maybe more triangle-shaped surfaces that meet above the base and a polygonal base.

Volume of a Pyramid = 1/3 × Base Area × Height

Base Area = 1/2 * base * height

Base Area = 1/2 *12*5

Base Area = 30 sq. ft

Volume of a Pyramid = 1/3 × 30 × 23

Volume of a Pyramid = 230 cu. ft.

Thus, the volume of the given oblique pyramid is found as 230 cu. ft.

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Option C, which states that the sample variance is constant as the number of sample values rises when the samples are independent and regularly distributed

Each sampling distribution's variability declines as the sample size go up, becoming more and more leptokurtic. The sample distribution's range is less than the original population's range.

The margin of error & sample size has an inverse relationship, meaning that as sample size rises, sampling error falls. It is because the findings would be more accurate the more evidence you had.

The distribution's dispersion is gauged by the standard error. The dispersion decreases as the sample size increases and the distribution's mean moves closer to the population mean.

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Answer:

69

Step-by-step explanation:

Multiply 6 by 9

54

Plug this value back into the equation

54 + 6 + 9

Add 54 to 6

60

Now add 9 to 60

69

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Answer:

70 sq. in

Step-by-step explanation:

Area of the figure

= ( 10 x 5 ) + ( 5 x 4 )

= 50 + 20

= 70

= 70 sq. in

Answer: $483.75

Step-by-step explanation:

The ultimate cost of the iPad is the price + sales tax.

This means that the cost equals $450+7.5% sales tax which means that

7.5% of $450 + $450 is the total.

Total cost: $33.75+$450 =

$483.75

Answer: he will pay $483.75

Step-by-step explanation:

uwuwuwuwuwuwuwuwuwuwuwuwuwuwu

7:1/3=7*3=21

As per the median, the set of data that fulfilling Marjane's requirement is 24, 25, 25, 25, 26, 26 (option c).

In statistics, data is a collection of numbers or values that represent a particular phenomenon. One way to measure central tendency, or the typical or representative value of the data, is through the median and the mode.

The median is the middle value when the data is arranged in numerical order, and the mode is the value that appears most frequently.

The third set of data is 24, 25, 25, 25, 26, 26.

The median is the middle value, which is also (25+25)/2 = 25.

The mode is the value that appears most frequently, which is 25.

Therefore, the mode and median are the same, fulfilling Marjane's requirement.

Therefore, the correct option is (c).

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Answer

bank b and yea

Step-by-step explanation:

Hazel should choose bank B.

Interest, in its most simple form, is calculated as a percent of the principal.

Given is two banks are offering one at 5% SI and other at 4.5% CI, Hazel has 10,000,000

For 5% SI, we have,

SI = P*R*T/100

SI = 10,000,000*5*10/100 = 50,00000

Amount = 10,000,000+5000000 = 15,000,000

For 4.5% CI, we have,

A = P(1+r/100)^t

= 10,000,000(1+0.045)^10

= 10,000,000(1.045)^10

= 15,529,694

As we can see, Bank B at 4.5% CI is giving more than Bank A.

Hence, Hazel should choose bank B.

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Answer:

160

Step-by-step explanation:

The difference between square units and cubic units lies in the dimensionality of the objects being measured.

Square units are used to measure the area of a two-dimensional shape, such as a square or rectangle. The unit for square units is typically written as "square" followed by the abbreviation for the unit being used. For example, square inches (in²), square meters (m²), or square centimeters (cm²).

To find the area of a shape, you multiply the length of one side by the length of another side. For example, if you have a square with side length of 4 units, the area would be 4 units multiplied by 4 units, which equals 16 square units.

On the other hand, cubic units are used to measure the volume of a three-dimensional object, such as a cube or rectangular prism. The unit for cubic units is typically written as the abbreviation for the unit being used cubed. For example, cubic inches (in³), cubic meters (m³), or cubic centimeters (cm³).

To find the volume of a shape, you multiply the length, width, and height of the object. For instance, if you have a cube with a side length of 3 units, the volume would be 3 units multiplied by 3 units multiplied by 3 units, which equals 27 cubic units.

In summary, square units measure the area of a two-dimensional shape, while cubic units measure the volume of a three-dimensional object. It's important to pay attention to the dimensionality of the object being measured in order to use the appropriate units.

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Explain the difference between 9 square units and 9 cubic units?

Answer:

2/8 (Simplified to 1/4)

Step-by-step explanation:

There are 8 pieces to this, 2 of these 8 pieces are 6, and 3 which are both multiples of 3. So this gives you 2/8 but as you said you need it simplified so if you divide the top and bottom by 2 that gets you the answer of 1/4.

Answer:

-8192

Step-by-step explanation:

It is simple. The pattern goes by x4, but every second number is a negative.

Answer: To show that the number 52.470817081708 is rational, we need to express it as a ratio of two integers.

Let x = 52.470817081708. We can write x as a sum of its integer part and fractional part:

x = 52 + 0.470817081708

To convert the fractional part to a fraction, we can multiply both numerator and denominator by a power of 10 that will eliminate the decimal point. In this case, we can multiply by 10^12:

0.470817081708 = 470817081708 / 10^12

Therefore, we can write:

x = 52 + 470817081708 / 10^12

We can simplify the fraction by dividing both numerator and denominator by their greatest common divisor:

x = 52 + 163717 / 3125000

So we have expressed x as a ratio of two integers, 163717 and 3125000. Therefore, 52.470817081708 is a rational number.

The number 52.470817081708 is rational because it can be expressed as a ratio of two integers: 52470817081708

To show that 52.470817081708 is rational, we need to write it as a ratio of two integers.

First, we can see that the number has a repeating pattern of digits after the decimal point, which tells us that it can be expressed as a fraction. To do this, we'll count the number of decimal places in the repeating pattern, which is 12 in this case.

Next, we'll use the following formula to convert the repeating decimal to a fraction:

x = a + b/(10^n - 1)

Where:

- x is the repeating decimal
- a is the non-repeating part of the decimal (in this case, it's just the whole number 52)
- b is the repeating part of the decimal (in this case, it's the digits 470817081708)
- n is the number of digits in the repeating pattern (in this case, it's 12)

So plugging in our values, we get:

52.470817081708 = 52 + 470817081708/(10^12 - 1)

Simplifying the denominator, we get:

52.470817081708 = 52 + 470817081708/999999999999

To write this as a ratio of two integers, we'll simplify the fraction:

52.470817081708 = 52 + 235408540854/499999999999

So the number 52.470817081708 can be written as the fraction 52 + 235408540854/499999999999, which is a ratio of two integers. Therefore, we have shown that 52.470817081708 is rational.

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Without seeing the scatterplot or the data, it is difficult to determine the exact value of x that has the largest absolute prediction error.

However, in general, the x-value with the largest absolute prediction error is typically the x-value that is farthest away from the regression line.

To calculate the prediction error for a given x-value, you can first calculate the predicted y-value for that x-value using the equation of the regression line. Then, you can subtract the actual y-value for that x-value from the predicted y-value to get the prediction error.

The absolute value of the prediction error represents the magnitude of the difference between the actual and predicted values, regardless of whether the prediction was too high or too low. Therefore, to find the x-value with the largest absolute prediction error, you can calculate the absolute prediction error for each x-value and then identify the x-value with the largest value.

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The value of dr/dh for a Cone with lateral surface area of A = 1625π is -h/[(325/2) - h^2]^(1/2). The Best method used here, i.e., expressing r in terms of h and then taking the derivative of r with respect to h using the chain rule,

We are given that the lateral surface area of a cone is: A = πrℓ where r is the radius of the base and ℓ is the slant height of the cone.

To find dr/dh, we need to use the chain rule. First, we can express r in terms of h and use the given information to solve for ℓ. Then, we can take the derivative of r with respect to h.

We know that the lateral surface area of the cone is given by:

A = πrℓ

We also know that the slant height of the cone is given by the Pythagorean theorem:

ℓ^2 = r^2 + h^2

Solving for r, we get:

r^2 = ℓ^2 - h^2

Substituting this expression for r^2 into the equation for A, we get:

A = πrℓ = π(ℓ^2 - h^2)^(1/2)ℓ

Simplifying this expression, we get:

A = πℓ^2(1 - (h/ℓ)^2)^(1/2)

We are given that A = 1625π, so we can solve for ℓ:

1625π = πℓ^2(1 - (h/ℓ)^2)^(1/2)

1625 = ℓ^2(1 - (h/ℓ)^2)^(1/2)

Squaring both sides and simplifying, we get:

1625^2 = ℓ^2(ℓ^2 - h^2)

Solving for ℓ, we get:

ℓ = (325/2)^(1/2)

Now, we can take the derivative of r with respect to h:

d/dh (r^2) = d/dh (ℓ^2 - h^2)

2r(dr/dh) = -2h

dr/dh = -h/r

Substituting r = (ℓ^2 - h^2)^(1/2) and ℓ = (325/2)^(1/2), we get:

dr/dh = -h/[(325/2) - h^2]^(1/2)

Therefore, dr/dh for a cone with lateral surface area of A = 1625π is -h/[(325/2) - h^2]^(1/2).

The method used here, i.e., expressing r in terms of h and then taking the derivative of r with respect to h using the chain rule, is the most straightforward and efficient method to find dr/dh for a cone with a given lateral surface area.

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____The given question is incomplete, the complete question is given below:

Find dr/dh for a cone with lateral surface area of A = 1625π. What is the best method to use to find dr/dh?