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3 years ago

Product of 1 5/6 - 5/15

Mathematics

2 answers:

posledela3 years ago

5 0

the answer is 3/2 ----------

seraphim [82]3 years ago

5 0

135/90 but just simply that answer

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A submarine changes its position by −7 meters every second. What is the change in the submarine's position after 300 seconds?

Hoochie [10]

If you take -7*300 is should equal -2100

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3 years ago

Read 2 more answers

Write an inequality to describe the possible values of x.

Papessa [141]

Answer:

Step-by-step explanation:

x<9+7, and x+7>9

solve

x<16

x>2

2<x<16

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3 years ago

Students at the local middle school are mixing a unique school color. The blue in the school

Ganezh [65]

Answer:

A: No

B: Yes

C: Yes

D: No

Step-by-step explanation:

A: Navy is obviously the bigger ratio so A is wrong

B: If you multiply both values by 18 you get the 3:1 ratio

C: If you Multiply both values by 5, you get the 3:1 ratio

D: Like A, Navy is always going to be bigger so D is wrong

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2 years ago

Please help I’ll give brainliest

Oksi-84 [34.3K]

It’s D if not I’m sorry

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2 years ago

A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 98% confidence inter

frosja888 [35]

Answer:

The minimum sample size required to create the specified confidence interval is 1024.

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:

$\alpha = \frac{1-0.98}{2} = 0.01$

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 $1-0.01 = 0.99$ , so $z = 2.327$

Now, find the margin of error 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.

What is the minimum sample size required to create the specified confidence interval

This is n when $M = 0.08, \sigma = \sqrt{1.21} = 1.1$ .

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

$0.08 = 2.327*\frac{1.1}{\sqrt{n}}$

$0.08\sqrt{n} = 2.327*1.1$

$\sqrt{n} = \frac{2.327*1.1}{0.08}$

$(\sqrt{n})^{2} = (\frac{2.327*1.1}{0.08})^{2}$

$n = 1024$

The minimum sample size required to create the specified confidence interval is 1024.

3 0

3 years ago