Answer:
Step-by-step explanation:
Let the numbers be x and y.
<u>We have:</u>
<u>Sum the two and find x:</u>
<u>Find y:</u>
Answer:
(8,1)
Step-by-step explanation:
The x coordinate of the midpoint is
(10+6)/2 = 16/2 =8
The y coordinate of the midpoint is
(-1+3)/2 = 2/2 =1
The midpoint is (8,1)
Answer:
2.5
Step-by-step explanation:
Put the values in place of the corresponding variables and do the arithmetic:
ab - 0.5b = (1)(5) -0.5(5) = 5 - 2.5 = 2.5
Answer:
D
Step-by-step explanation:
Use the formula for the SA of a hemisphere.
![SA=2\pi r^2](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20r%5E2)
Now we can find the radius of the hemisphere, which is 15.
Then, we can square that and multiply it by 2 to get 450.
Now, let's use the formula for the Volume of a hemisphere.
![V=\frac{2\pi r^3}{3}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B2%5Cpi%20r%5E3%7D%7B3%7D)
Now we can cube 15 and multiply it by 2 to get 6750.
Then we can divide this number by 3.
2250.
So the answer is D.