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2 years ago

Please help :((

Mathematics

1 answer:

yanalaym [24]2 years ago

5 0

Answer:

C = 2 * π * R = 2 * π * 14 = <u>87.9646 cm</u>

Step-by-step explanation:

All this means is that the perimeter, or circumference, is the distance or length around a shape or object. And the area is the amount of space inside the thing.

In today’s geometry lesson, you will review the formulas for finding the area and perimeter of basic geometric shapes.

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Four student government officers want to go to the state convention. It will cost them $120 for registration, $355 for transport

kirza4 [7]

Answer:

The number of cars must they wash in order to have enough money to pay for the trip is 40.

Step-by-step explanation:

The total amount of money required for the four student government officers to go to the state convention is:

$Amount\ needed=\$120+\$355+(\$456\times4)=\$655$

The amount saved for the convention in the student government savings account is $495.

The additional amount required is:

Additional amount = Amount Required - Amount Saved

= $655 - $495

= $160

The four students decided to earn the additional amount by washing cars.

They charge $4 for each car wash.

Compute the number of car wash the students must do is:

$Number\ of\ car\ wash=\frac{160}{4} =40$

Thus, the number of cars must they wash in order to have enough money to pay for the trip is 40.

4 0

3 years ago

Read 2 more answers

3x-2y=-16 solve for y (show work) thx

umka2103 [35]

After solving for y we get: $y=8+\frac{3x}{2}$

Step-by-step explanation:

3x-2y=-16 solve for y

We need to find value of y.

Solving:

$3x-2y=-16\\-2y= -16-3x\\y=\frac{-16}{-2}-\frac{3x}{-2}\\y=8+\frac{3x}{2}$

So, After solving for y we get: $y=8+\frac{3x}{2}$

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

6 0

3 years ago

These shapes are similar.

natka813 [3]

A is the answer to this

7 0

3 years ago

Cameron makes a blueprint for his game room to decide how to set up the room. He places the table in the center of the sketches

Anestetic [448]

$\sqrt{5\\$ is the correct answer. you use the Pythagorean Theorem with 2 as a and 1 as b. So the equation is $c^{2}$ = $2^{2}$ + $1^{2}$ .

8 0

3 years ago

Claim amounts for wind damage to insured homes are independent random variables with common density f(x) = ( 3 x4 , x > 1 0 ,

Irina-Kira [14]

$f_X(x)=\begin{cases}\dfrac3{x^4}&\text{for }x>1\\\\0&\text{otherwise}\end{cases}$

This distribution has expectation

$E[X]=\displaystyle\int_{-\infty}^\infty xf_X(x)\,\mathrm dx=\int_1^\infty\frac3{x^3}\,\mathrm dx=\frac32$

a. The probability that $X$ falls below the average/expectation is

$P\left(X$

b. Denote by $X_{(3)}$ the largest of the three claims $X_1,X_2,X_3$ . Then the density of this maximum order statistic is

$f_{X_{(3)}}(x)=3f_X(x)F_X(x)^2$

where $F_X(x)=P(X\le x)$ is the distribution function for $X$ . This is given by

$F_X(x)=\displaystyle\int_{-\infty}^xf_X(t)\,\mathrm dt=\begin{cases}0&\text{for }x$

So we have

$f_{X_{(3)}}(x)=\begin{cases}0&\text{for }x1\end{cases}$

and the expectation is

$E[X_{(3)}]=\displaystyle\int_{-\infty}^\infty xf_{X_{(3)}}(x)\,\mathrm dx=\int_1^\infty\frac9{x^3}\left(1-\frac1{x^3}\right)^2\,\mathrm dx=\frac{81}{40}=\boxed{2.025}$

c. Denote by $X_{(1)}$ the smallest of the three claims. $X_{(1)}$ has density

$f_{X_{(1)}}(x)=3f_X(x)(1-F_X(x))^2=\begin{cases}0&\text{for }x1\end{cases}$

so the expectation is

$E[X_{(1)}]=\displaystyle\int_{-\infty}^\infty xf_{X_{(1)}}(x)\,\mathrm dx=\int_1^\infty\frac9{x^9}\,\mathrm dx=\frac98=\boxed{1.125}$

3 0

4 years ago