2r-3r+10=20
Move all terms to the left:
2r-3r+10-(20)=0
add all the numbers together, and all the variables
-1r-10=0
move all terms containing r to the left, all other terms to the right
-r=10
r=10/-1
r=-10
C. 8 inches. I hope I'm not too late
Answer:
1. -15
2. 35
3. -60
4. 5
Step-by-step explanation:
n = 16:
-5/6(2+16)
-5/6(18)
-15
n= -44:
-5/6(2-44)
-5/6(-42)
35
n = 70:
-5/6(2+70)
-5/6(72)
-60
n = -8:
-5/6(2-8)
-5/6(-6)
5
Answer:
1767 cm³
Step-by-step explanation:
We can use volume V = 4/3 π r³
We have diameter of 15 cm. To get radius, we need to divide diameter by 2.
r = 7.5 cm
So now plug in r = 7.5 then calculate V:
V = 4/3 π ( 7.5 )³
V = 4/3 π * 421.875 ≈ 1767.145 ≈ 1767
Hope this helps.
