**Answer:**

15

**Step-by-step explanation:**

**Answer:**

±1,±5,±1/2,±5/2,±1/4,±5/4

**Step-by-step explanation:**

Given polynomial

4x^3+8x^2-x+5

as a(n)= 4

divisors of 4 = ±1,±2,±4

as a(0)= 5

divisors of 5= ±1,±5

finding possible roots

Factors of constant term(1,5)/Factors of leading coefficient(1,2,4)

±1,±5

±1/2,±5/2

±1/4,±5/4 !

**Answer:**

-2/9

**Step-by-step explanation:**

9 9/12 + 7 8/12 = 16 17/12 which converts to your answer----> 17 5/12

Answer:

100°

Step-by-step explanation:

180 - 2(40)

180 - 80

100