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3 years ago

Help meee i am stuck

Mathematics

1 answer:

Setler79 [48]3 years ago

7 0

Answer:

153.94 inches cubed

Step-by-step explanation:

plug in 7 as the radius

the formula is A = πr^2

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Natalia drove to her grandmother’s house for Thanksgiving. It took her 5 hours, for a total of 225 miles. What is her average sp

Alekssandra [29.7K]

Answer:

15 miles per hour

Step-by-step explanation:

Speed = distance / time

Speed = 225/15

Speed = 15 miles per hour

8 0

3 years ago

The thickness of a protective coating applied to a conductor designed to work in corrosive conditions follows a uniform distribu

pochemuha

Answer:

$P(24< X$

And replacing we got:

$P(24< X$

Step-by-step explanation:

We can define the random variable X as the thickness of a protective coating applied to a conductor designed to work in corrosive conditions. And the distribution for X is given by:

$X \sim Unif (a = 20, b=40)$

And we want to find this probability:

$P(24< X$

And in order to find this probability we can use the cumulative distribution function given by:

$F(x) = \frac{x-a}{b-a} , a\leq X \leq b$

And if we use this formula for the probability desired we have:

$P(24< X$

And replacing we got:

$P(24< X$

5 0

3 years ago

Help, please <br><br> 22=4x+6

skad [1K]

Minus 6 from both sides, 4x = 16, divide by 4, x = 4

4 0

4 years ago

Read 2 more answers

Barnard's star is approximately 10,000,000,000,000,000 meters from the sun. Epsilon Eridani is at distance of about 100,000,000,

Bingel [31]

It is 10 power of 16

3 0

4 years ago

Read 2 more answers

I only need 12 and 17, first good response i will give brainliest please i’m desperate

Mumz [18]

Answer:

$\textsf{12.} \quad y = 6x - 5$

$\textsf{17.} \quad y=-\dfrac{1}{4}x-2$

Step-by-step explanation:

<h3><u>Question 12</u></h3>

Find the slope of the line by substituting two points from the given table into the slope formula.

<u>Define the points</u>:

Let (x₁, y₁) = (2, 7)
Let (x₂, y₂) = (3, 13)

$\implies \textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{13-7}{3-2}=\dfrac{6}{1}=6$

Substitute the found slope and point (2, 7) into the point-slope formula to create an equation of the line:

$\implies y-y_1=m(x-x_1)$

$\implies y-7=6(x-2)$

$\implies y-7=6x-12$

$\implies y=6x-5$

<h3><u>Question 17</u></h3>

Given:

f(4) = 3
f(0) = -2

Therefore, two points on the line are:

(4, -3)
(0, -2)

The y-intercept is the y-value when x = 0.

Therefore, the y-intercept of the line is -2.

$\boxed{\begin{minipage}{6.3 cm}\underline{Slope-intercept form of a linear equation}\\\\$y=mx+b$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $b$ is the $y$-intercept.\\\end{minipage}}$