All categories

3 years ago

What is 2.7 squared + 3.9 squared

Mathematics

2 answers:

german3 years ago

8 0

The answer should be 22.5.

nekit [7.7K]3 years ago

3 0

22.5 is the answer. Hope this helps.-<span>Haяяison</span>

You might be interested in

What are some exercises that help me reach my goal?Comment at least with 2 exercises

lilavasa [31]

Walking and Cycling, These exercises may seem small but help build endurance. Endurance will help you keep on going when running a full mile.

3 0

3 years ago

Simplify.

ohaa [14]

your answer is 15m+6n

6 0

4 years ago

Read 2 more answers

A statistics teacher started class one day by drawing the names of 10 students out of a hat and asked them to do as many pushups

HACTEHA [7]

Answer: b. 8.56 to 21.44

Step-by-step explanation:

Let $\mu$ be the mean number of pushups that can be done.

As per given , we have

Sample size : n= 10

Degree of freedom = n-1=9

Sample mean : $\overline{x}=15$

Sample standard deviation : $s=9$

Significance level : α=1-0.95=0.05

From t- distribution table ,

Critical two -tailed t-value for α=0.05 and df = 9 is

$t_{\alpha/2, 9}=t_{0.025,9}=2.2622$

Confidence interval for $\mu$ is given by :-

$\overline{x}\pm t*\dfrac{s}{\sqrt{n}}$

$=15\pm (2.2622)\dfrac{9}{\sqrt{10}}\\\\\approx 15\pm 6.44=(15-6.44,\ 15+6.44)\\\\=(8.56,\ 21.44)$

Hence, the 95% confidence interval for the true mean number of pushups that can be done is 8.56 to 21.44.

5 0

3 years ago

lesya [120]

Answer:

C because if you make $17 dollars an hour that's 2,080 hours a year, Multiply that and you got C

6 0

3 years ago

Need help ! explain how you got the answer too pls:)

Likurg_2 [28]

Answer:

the answer is D

Step-by-step

14ab^3/7a^-2b^-1

= 14a^3b^4/7

=2a^3b^4

7 0

3 years ago