First you take the area,

4 x 2 = 8 cm

Then you take 72 cm and divide it by 8 cm to get your length

So the answer for the length is 9 cm

5 0

3 years ago

30% of doctors on a hospital are female. if there are 780 doctors altogether, how many doctors are female ? round to the nearest

Archy [21]

30% as a decimal is 0.3

Multiply 780 by 0.3
780(0.3)=234 female doctors

4 0

3 years ago

Read 2 more answers

Maya can run 18 miles in 3 hours, and ahe can bike 18 miles in 2 hours. What distance did Maya travel if she ran for t hours and

ra1l [238]

The answer to this question is

3 0

2 years ago

We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of

sergiy2304 [10]

Answer:

Margin of error = 0.773

Step-by-step explanation:

We are given the following information in the question.

Sample size, n = 20

Sample mean = 8

Sample standard deviation = 2

90% Confidence interval

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.729$

Margin of error:

$t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$1.729(\frac{2}{\sqrt{20}} ) = 0.773$

7 0

3 years ago

Find the product of 2 1/4 × 3/5 ​

Find the product of 2 1/4 × 3/5