Since x is less than 0 we have to use -2x.
Substitute -3 for x.
f(x) = -2(-3)
f(x) = 6
Answer:
width = 4.5 m
length = 14 m
Step-by-step explanation:
okay so first you right down that L = 5 + 2w
then as you know that Area = length * width so you replace the length with 5 + 2w
so it's A = (5 +2w) * w = 63
then 2 w^2 + 5w - 63 =0
so we solve for w which equals 4.5 after that you solve for length : 5+ 2*4.5 = 14
Answer:
2x^2 - 8x
Step-by-step explanation:
2x(x-4). Distribute.
(2x*x)+(2x*-4)
2x^2+(-8x)
2x^2 - 8x
Answer:
Step-by-step explanation:
a/7+b
You simply have to use the values provided in the equation given. If a=49 and b=7 you have
49/7+7, since 49/7=7 you have
7+7 which equals
14
Answer: x = -5
Step-by-step explanation:
-8 (x + 5) = -3x - 7 + x - 3
First, we use distributive property
-8x - 40 = -3x - 7 + x - 3
Then, we combine like terms.
-3x + x = -2x
-7 + -3 = -10
-8x - 40 = -2x - 10
Add 10 to each side
-8x - 30 = -2x
Add 8x to each side
-30 = 6x
Divide each side by 6
-5 = x
