Answer:
105
Step-by-step explanation:
f(x) = 8x² + x -9
g(x) =5x²
(f+g)(x) = 8x² + x - 9 + 5x²
Collect like terms
8x² +5x² + x - 9
13x² + x - 9
b) (f+g)(-3) = 13x² + x - 9 when x =-3
= 13×-3² + (-3) - 9
= (13×9) -3 -9
= 117 -3 -9
= 105
I hope this was helpful, please mark as brainliest
Answer:
289.50
Step-by-step explanation:
Answer: C
Step-by-step explanation:
Plz tell me if i am wrong
Answer:
x = 4
y = 3
Step-by-step explanation:
x = 10 - 2 y
substitute x = 10 - 2y into 2x - y = 5
20- 5y = 5
then
y = 3
and
x = 4
Mark brainliest
Well, we have to plug in the values and then solve for v
v=10 + 10 times 7
by order or operations 10 times 7=70 plus 10 is 80
so v=80
