Answer:
b. 7x3 + 9x2 - 3x - 8
Step-by-step explanation:
Write the problem as a mathematical expression.
(4x3+6x2+2x−3)+(3x3+3x2−5x−5)
Remove parentheses.
4x3+6x2+2x−3+3x3+3x2−5x−5
Add 4x3
and 3x3
.
7x3+6x2+2x−3+3x2−5x−5
Add 6x2
and 3x2
.
7x3+9x2+2x−3−5x−5
Subtract 5x
from 2x
.
7x3+9x2−3x−3−5
Subtract 5
from −3
.
7x3+9x2−3x−8
Answer:
They can build pipes for clean water, and building toilets can also help get rid of unhygienic.... You know Also, hygiene education would help too.
Hope that helped ya, vote, thanks, and brainliest. Have an great day! :D
Answer:
24
Step-by-step explanation:
The sum of the exterior angles of a polygon = 360°
Divide this by the size of 1 exterior angle to find number of sides, that is
number of sides = 
= 24
