Answer:
you need the formula for the cone , Korc
Step-by-step explanation:
formula for cone = *π**h
they tell us that the diameter is 8 so r = 4
and that h = 9
volume of cone = *π**9
VoC = 150.796
VoC = 150.8 ( to the nearest 10th)
Plug is the number try one and see if it equals and solve for y get y on one side
D. X=18
Exp:
16-X=-2
-16 -16
-X=-18
X=18
An=a1+d (n-1)
a1= 7
find d
Let's use a2
a2=1
1=7+d (2-1)
1=7+d
-7 both sides
d=-6
explicit formula is
an=7+-6 (n-1)
a14=?
a14=7-6 (14-1)
a14=7-6×13
a14=7-78
a14=-71