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2 years ago

Ill give brainliest and its 20 points!!!

Mathematics

1 answer:

alexgriva [62]2 years ago

8 0

Answer: I think the answer is B. 3.

Step-by-step explanation:

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andy gets 7 out of 25wrtong in his maths test what fraction of the questions does andy answer correctly

alexira [117]

18/25 i think! :) can’t simplify (

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2 years ago

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What is the solution for -3(p+7)=4-6 (p+3)

ser-zykov [4K]

You would need to distribute the 3 on the left side and the -6 on the right side. p=7/3

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3 years ago

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A random sample of 8 recent college graduates found that starting salaries for architects in New York City had a mean of $42,653

ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68$

The lower end of the interval is the sample mean subtracted by M. So it is 42653 - 6315.68 = 36337.32.

The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

So the correct answer is:

C. (36337.32, 48968.68)

3 0

2 years ago

A sequence is generated by the formula ax = 3x + 4. What is the value of the seventh term?

lyudmila [28]

Answer:

Explanation:

We are given the sequence formula expression;

ax = 3x + 4

You are to get the 7th term. This is gotten by substituting x = 7 into the expression as shown;

a7 = 3(7) + 4

a7 = 21 + 4

a7 = 25

Hence the seventh term of the sequence is 25

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1 year ago

6 The manufacturer of an oven states that the

Len [333]

Result, Rachel can be certain that the temperature is suitable for her cake.

7 0

3 years ago