Answer:
3/5
Step-by-step explanation:
(3/5) · (1/2) over (3/5) · (1/2) + (2/5) · (1/2)
= 3/5
Sydney’s age is 50.
Devaughn age: x-15 Sydney’s age: x
x-15+x = 85
2x-15 = 85
2x = 100
x = 50
We use unit rates to compare prices, so we can find, what same quantity is worth
F(x) = 3x² - 3x - 6
The zeros f(x) = 0 ⇒ 3x² - 3x - 6 = 0
3x² - 6x + 3x - 6 = 0
3x(x - 2) + 3(x - 2) = 0
(x - 2)(3x + 3) = 0 ⇔ x - 2 = 0 ∨ 3x + 3 = 0
x = 2 ∨ 3x = -3
x = 2 ∨ x = -1
