Hello from MrBillDoesMath!
Answer:
-2c^3 - 4c^2 + 1
Discussion:
(-7c^3 + 5c^2 + 1) + (5c^3 - 9c^2) = => combine like terms
(-7c^3 + 5c^3) + (5c^2 - 9c^2) + 1 =
-2c^3 - 4c^2 + 1
Thank you,
MrB
Heptagon has seven sides.
Jack was planting a tree. He was to dig a hole that was 3 feet deep for every 5 feet of tree height. How deep should he dig the hole for a tree that is 17feet high.
Calculations Cross multiplication
=
5x = 2 x 13
Divide by 5 to isolate x
=
x = 10.2
Answer = 10.2
First make an inequality to solve for x
(x + 45) + [(x + 45) - 30] + [2x + (x + 45)] = 180
x = 15
now plug x back into each equation and solve
first angle = 60°
second angle = 30°
third angle = 90°