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Inga [223]
3 years ago
15

HELPPP!!! help me for a brainliest!

Mathematics
1 answer:
Radda [10]3 years ago
8 0

<em>=</em><em>5</em><em>^</em><em>6</em><em>/</em><em>5</em><em>^</em><em>4</em>

<em>=</em><em>5</em><em>^</em><em>(</em><em>6</em><em>-</em><em>4</em><em>)</em>

<em>=</em><em>5</em><em>^</em><em>2</em><em> </em><em>ANSWER</em><em>.</em><em>.</em>

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Seven more than one half a number as an equation
romanna [79]

Answer:

1/2x+7

Step-by-step explanation:

5 0
3 years ago
The mean MCAT score 29.5. Suppose that the Kaplan tutoring company obtains a sample of 40 students with a mean MCAT score of 32.
Paul [167]

Answer:

We conclude that the students that took the Kaplan tutoring have a mean score greater than 29.5.

Step-by-step explanation:

We are given that the Kaplan tutoring company obtains a sample of 40 students with a mean MCAT score of 32.2 with a standard deviation of 4.2.

Let \mu = <u><em>population mean score</em></u>

So, Null Hypothesis, H_0 : \mu \leq 29.5      {means that the students that took the Kaplan tutoring have a mean score less than or equal to 29.5}

Alternate Hypothesis, H_A : \mu > 29.5      {means that the students that took the Kaplan tutoring have a mean score greater than 29.5}

The test statistics that will be used here is <u>One-sample t-test statistics</u> because we don't know about population standard deviation;

                               T.S.  =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean MCAT score = 32.2

            s = sample standard deviation = 4.2

            n = sample of students = 40

So, <u><em>the test statistics</em></u> =  \frac{32.2-29.5}{\frac{4.2}{\sqrt{40} } }  ~  t_3_9

                                    =  4.066

The value of t-test statistics is 4.066.

Now, at 0.05 level of significance, the t table gives a critical value of 1.685 at 39 degrees of freedom for the right-tailed test.

Since the value of our test statistics is more than the critical value of t as 4.066 > 1.685, so <u><em>we have sufficient evidence to reject our null hypothesis</em></u> as it will fall in the rejection region.

Therefore, we conclude that the students that took the Kaplan tutoring have a mean score greater than 29.5.

3 0
3 years ago
In ΔWXY, if m∠W is five less than three times m∠Y and m∠X is 8 more than m∠W, find the measures of each angles?
yulyashka [42]

Answer:

∡W = 73°

∡X = 81°

∡Y = 26°

Step-by-step explanation:

let 'y' = measure angle Y

let '3y - 5' = measure of angle W

let '3y + 3' = measure of angle X

add all together and set equal to 180

y + 3y + 3y - 2 = 180

7y = 182

y = 26

substitute 26 for y in '3y+3' to find measure of angle X

substitute 26 for y in '3y-5' to find measure of angle W

5 0
3 years ago
Answer for brainlist &amp; extra points &lt;3
DENIUS [597]

Answer:

Equation:500÷8×2

Answer:125

3 0
3 years ago
What is the answer 4.3 x .8
Rzqust [24]

Answer:

The answer is 3.44

Step-by-step explanation:

4.3 × 0.8 = 3.44

The answer is 3.44

<u>-TheUnknownScientist 72</u>

6 0
2 years ago
Read 2 more answers
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