3 years ago

How to find area of a rectangle?

Mathematics

1 answer:

anyanavicka [17]3 years ago

4 0

Formula

Area = L*w

Hint : To find the area of a rectangle , multiply the length times the width

I hope that's help !

You might be interested in

-3/2 multiplied by -5 1/4 (reasonable estimate)

Makovka662 [10]

7.875

-3/2 = -1.5
-5 1/4 = -5.25

-1.5 • -5.25 = 7.875

6 0

4 years ago

Read 2 more answers

A local bank needs information concerning the savings account balances of its customers. A random sample of 15 accounts was chec

PSYCHO15rus [73]

Answer:

(513.14, 860.36) is a 98% confidence interval for the true mean

Step-by-step explanation:

We have a small sample size of n = 15, the mean balance was $\bar{x} = 686.75$ with a standard deviation of s = 256.20. The confidence interval is given by $\bar{x}\pm t_{\alpha/2}(\frac{s}{\sqrt{n}})$ where $t_{\alpha/2}$ is the 100 $(\alpha/2)$ th quantile of the t distribution with n-1=15-1=14 degrees of freedom. As we want a $100(1-\alpha)$ % = 98% confidence interval, we have that $\alpha = 0.02$ and the confidence interval is $686.75\pm t_{0.01}(\frac{256.20}{\sqrt{15}})$ where $t_{0.01}$ is the 1st quantile of the t distribution with 14 df, i.e., $t_{0.01} = -2.6245$ . Then, we have $686.75\pm (-2.6245)(\frac{256.20}{\sqrt{15}})$ and the 98% confidence interval is given by (513.1379, 860.3621)