So if it runs 1/4 of a mile in 22.5 seconds, we can work out that it runs 0.01111 miles in a second, therefore:
0.01111x60x60 = 40 miles per hour.
Hope I helped!
Answer: C
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Given
- 1(x + 7)(x - 4)
each term in the second factor is multiplied by each term in the first factor, that is
leaving the multiplier of - 1 for the time being
x(x- 4) + 7(x - 4) ← distribute both parenthesis
= x² - 4x + 7x - 28 ← collect like terms
= x² + 3x - 28
Hence
- 1(x² + 3x - 28) = - x² - 3x + 28 → D