3 years ago

Find the mean of the integers 5,-7,12,-10,15

1 answer:

7 0

Finding the average is adding all the numbers together then dividing by the number of numbers. 15/5 = 3

You might be interested in

Roman55 [17]

I got 12 hours and 31 minutes.

5 0

4 years ago

vlada-n [284]

Recall the double/half angle formulas:

$\cos^2\dfrac x2=\dfrac{1+\cos x}2$

$\sin^2\dfrac x2=\dfrac{1-\cos x}2$

We're given $\sin u=\frac{24}{25}$ , and since $u$ is between π/2 and π, we expect $\cos u$ to be negative. So from the Pythagorean identity, we find

$\sin^2u+\cos^2u=1\implies\cos u=-\sqrt{1-\sin^2u}=-\dfrac7{25}$

Also, we know $\frac u2$ will fall between π/4 and π/2, so both $\sin\frac u2$ and $\cos\frac u2$ will be positive. Then we find

$\cos\dfrac u2=\sqrt{\dfrac{1+\cos u}2}=\dfrac35$

$\sin\dfrac u2=\sqrt{\dfrac{1-\cos u}2}=\dfrac45$

and it follows that

$\tan\dfrac u2=\dfrac{\sin\frac u2}{\cos\frac u2}=\dfrac43$

8 0

4 years ago

Ivan

70 jelly beans
28/0.4 is 70
40%=0.4

8 0

3 years ago

Jlenok [28]

Answer:

Step-by-step explanation:

6 0

3 years ago

castortr0y [4]

Answer:

f(x) = x-3/sqrt x

7 0

3 years ago

Find the mean of the integers 5,-7,12,-10,15​