21 is nearly 25% of 80, so my estimate is 25%
All angles of a pentagon should equal up to 540 degrees, so you must have added them all up and figured out how much more you needed to get to 540
(f+g)(x)=x^2-36+x^3+2x^2-10
(f+g)(x)=x^3+3x^2-46
Answer:
he width of the ravin is 47
Answer:
20.9 is the answer because To round 20.86 to the nearest tenth consider the hundredths’ value of 20.86, which is 6 and equal or more than 5. Therefore, the tenths value of 20.86 increases by 1 to 9. 20.86 rounded to the nearest tenth = 20.9
