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3 years ago

WILL MARK BRAINIEST!!

Mathematics

1 answer:

AnnZ [28]3 years ago

3 0

You know the formula. It is simply a matter of putting in the numbers. When the calculations are repetitive, it is convenient to let a machine do them.

CD: -1/4
RS: undefined (a vertical line at x=-2)
TU: 0 (a horizontal line at y=8)
EF: -5/7

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7 y-2= 3 (x-8) What is the slope <br> intercept form of the equation

iogann1982 [59]

Answer:

y = 3x - 22

Step-by-step explanation:

y - 2 = 3(x - 8)

y - 2 = 3x - 24

y = 3x - 22

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3 years ago

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satela [25.4K]

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3 years ago

Read 2 more answers

The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds

Feliz [49]

Answer:

0.3811 = 38.11% probability that he weighs between 170 and 220 pounds.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 200, \sigma = 50$

Find the probability that he weighs between 170 and 220 pounds.

This is the pvalue of Z when X = 220 subtracted by the pvalue of Z when X = 170.

X = 220

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{220 - 200}{50}$

$Z = 0.4$

$Z = 0.4$ has a pvalue of 0.6554

X = 170

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{170 - 200}{50}$

$Z = -0.6$

$Z = -0.6$ has a pvalue of 0.2743

0.6554 - 0.2743 = 0.3811

0.3811 = 38.11% probability that he weighs between 170 and 220 pounds.

6 0

4 years ago

The two Step equations 5k=20

victus00 [196]

Answer: X = 4

Step-by-step explanation: To solve for k in this equation, we want to get k by itself on the left side of the equation.

Since k is being multiplied by 5, to get k by itself, we need to divide by 5 on the left side of the equation. Since we divided by 5 on the left side, we must also divide by 5 on the right side.

On the left side, notice that the 5's cancel out, so we are simply left with z. On the right side, we have 20 divided by 5 which gives us 4.

Now we have X = 4.

Finally, remember to check your answer by substituting a 4 back into the original equation.

So we have 5 (4) = 20 which is a true statement.

This means that our answer, x = 4 is correct.

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3 years ago

From the equation 5 - 4 + 7x + 1 = __x + __, use numbers 0 - 9 to find No Solutions, One Solution, or Infinitely Many Solutions.

mina [271]

The correct answer is

<span>5 - 4 + 7x + 1 = 7 x + 1</span>

5 0

3 years ago