2 years ago

25 Points + BRANIEST. PLEASE HELP

Mathematics

1 answer:

Zepler [3.9K]2 years ago

5 0

Answer:

sorry I don't know please forgive because I can't copy the question

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Sixty-three is 70% of what number?

Margaret [11]

70 =63
100 ?
cross multiply 63 and 100= 6300 then divide by 70= 90

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3 years ago

The projected worth (in millions of dollars) of a large company is modeled by the equation w = 236(1.06) t. The variable t repre

Ivahew [28]

Answer:

$448 million

Step-by-step explanation:

When it is 2011, t=11, so

$w=236(1.06)^{11} \approx 448$

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1 year ago

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student

Butoxors [25]

Answer: $(21.541,\ 23.059)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=240$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=22.3$

Standard deviation : $\sigma= 6$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.960$

Now, a confidence interval at the 95% level of confidence will be :-

$22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)$

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3 years ago

WILL AMKR BRAINLIEST IF GOTTEN RIGHTTT!!!!

Juliette [100K]

Answer:

1.06 sq inches

Step-by-step explanation:

its reasonable come on now

4 0

3 years ago

How much dirt is in a hole 5 feet wide, 2 feet long, and 3 feet deep?

Veseljchak [2.6K]

Answer:

30 ft of dirt.

Step-by-step explanation:

We want to know the volume, or the capacity, of the hole.

The formula for volume is to multiply the length, width, and height.

l x w x h

2 x 5 x 3 = 30

So there is 30 ft of dirt in the hole.

plz mark brainliest if this helped :)

5 0

3 years ago

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