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3 years ago

Help me pls I do not want to fail math

Mathematics

1 answer:

RSB [31]3 years ago

6 0

Answer:

Step-by-step explanation:

One proportion is 3/12 = 1/0.25

(Double-check to make sure I am correct)

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Which expression is equivalent to (4x+11)+7x?

Anna007 [38]

HEY THERE FAM.

THE CORRECT ANSWER IS....<span> D.(4x-7x)+11</span>

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3 years ago

Last one promise.Please help me.

ella [17]

The answer is 240.5 hope you get the question

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3 years ago

Read 2 more answers

The range is the set of

slavikrds [6]

Answer:The range of a set of data is the difference between the highest and lowest values in the set.

Step-by-step explanation: The range of a set of data is the difference between the highest and lowest values in the set. To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.

Hope this helps :)

7 0

3 years ago

A high school student took two college entrance exams, scoring 1070 on the SAT and 25 on the ACT. Suppose that SAT scores have a

antoniya [11.8K]

Answer:

Due to the higher z-score, he did better on the SAT.

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.

Determine which test the student did better on.

He did better on whichever test he had the higher z-score.

SAT:

Scored 1070, so $X = 1070$

SAT scores have a mean of 950 and a standard deviation of 155. This means that $\mu = 950, \sigma = 155$ .

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

$Z = \frac{1070 - 950}{155}$

$Z = 0.77$

ACT:

Scored 25, so $X = 25$

ACT scores have a mean of 22 and a standard deviation of 4. This means that $\mu = 22, \sigma = 4$

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

$Z = \frac{25 - 22}{4}$

$Z = 0.75$

Due to the higher z-score, he did better on the SAT.

8 0

3 years ago

What is the volume of the right prism?

V125BC [204]

That's a rectangular prism.

And the formula to find the volume of a rectangular prism is:

$\sf~A=lwh$

Plug in what we know:

$\sf~A=(9)(2)(6)$

Multiply the three numbers together:

$\sf~A=\boxed{\sf108}$

3 0

3 years ago