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2 years ago

Find the constant of variation (k) where y varies directly with x. y = 2, when X = 6.

Mathematics

1 answer:

ExtremeBDS [4]2 years ago

7 0

Answer:

The graph below models the value of a $20,000 car t years after it was purchased.

Value of Car

A graph titled Value of Car has years on the x-axis and Dollars on the y-axis. A line curves down and goes through points (0, 20,000), (4, 10,000), and (14, 2,000).

Which statement best describes why the value of the car is a function of the number of years since it was purchased?

Each car value, y, is associated with exactly one time, t.

Each time, t, is associated with exactly one car value, y.

The rate at which the car decreases in value is not constant.

There is no time, t, at which the value of the car is 0.

Step-by-step explanation:

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The heights of the trees in a forest are normally distributed, with a mean of 25 meters and a standard deviation of 6 meters. Wh

Alla [95]

Answer:

2.3%

Step-by-step explanation:

The formula to convert x into z distribution is

$z=\frac{x-\mu}{\sigma}$

Where z is the test statistic

x is what we are looking for (in this case 37)

$\mu$ is the mean (in this case, it is 25)

$\sigma$ is the standard deviation (we have 6)

<em>Plugging these into the formula, we get:</em>

$z=\frac{x-\mu}{\sigma}\\z=\frac{37-25}{6}\\z=2$

Thus we can say we want $P(z\geq 2)$

<u>Note: </u> $P(z\geq a)=1-P(z\leq a)$

The table given is for any z where $P(z\leq a)$

Thus, now we have:

$P(z\geq 2)\\=1-P(z\leq 2)\\=1-0.9772\\=0.0228\\$

0.0228 into percentage is 0.0228 * 100 = 2.28%

Rounded, we get 2.3%

Third answer choice is right.

3 0

2 years ago

PLEASE HELP! I REALLY NEED HELP!!!

Brums [2.3K]

Answer:

on which one?

5 0

2 years ago

Write a two step equation that has -5 as it solution.

Sonbull [250]

Answer:

$x^2 + 10x + 25 = 0$

Step-by-step explanation:

$x^2 + 10x + 25 = 0$

$(x + 5)^2 = 0$

$x = -5$

8 0

2 years ago

Select the correct answer.

Ghella [55]

Answer:x-5

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Explain how you could use a number line to show that -4 + 3 and 3 + (-4) have the same value. Which property of addition states

gtnhenbr [62]

I would say commutative.

8 0

2 years ago

Read 2 more answers