Is there more to the question?
Answer:
The solutions are -3 and -1
Step-by-step explanation:
∵ y = -x² - 2x + 8
∵ y = 2x + 11
∴ -x² - 2x + 8 = 2x + 11
∴ -x² - 2x - 2x + 8 - 11 = 0
∴ -x² - 4x - 3 = 0 ⇒ divide both sides by -1
∴ x² + 4x + 3 = 0
∴ (x + 3)(x + 1) = 0
∴ x + 3 = 0 ⇒ x = -3
∴ x + 1 = 0 ⇒ x = -1
∴ The solutions are -3 and -1
The first choice, or $14.76.
Answer:
12 dozen
Step-by-step explanation:
create a proportion of: dozen cookies / cups of pecan
let 'd' = dozen cookies
(3/1 ÷ 5/4) = (d ÷ 5)
simplify 3/1 ÷ 5/4 to be: 3/1 x 4/5, which equals 12/5
12/5 = d/5
cross-multiply to get:
5d = 60
d = 12
