Answer:
C. (-7, -15)
Step-by-step explanation:
Both the x- and the y-coordinates of a point in the third quadrant are negative. The given point C. (-7, -15) is the only one of the four choices that satisfies this criterion.
Answer:
The difference of fifty-four and seven times a number is written as 54 - 7x.
Step-by-step explanation:
Answer:
105 mph = rate of first plane
130 mph = rate of second plane
Step-by-step explanation:
Let r = rate of first plane
then r + 25 = rate of second plane
2r = distance of first plane
2(r + 25) = distance of second plane
2r + 2(r + 25) = 470
2r + 2r + 50 = 470
4r = 420
r = 105 mph
r + 25 = 130 mph
Answer:
275
Step-by-step explanation:
825/3=275
Answer:
- 24x + 9
Step-by-step explanation:
Differentiate each term using the power rule
( a
) = na
Given
f(x) = - 12x² + 9x, then
f'(x) = (2 × - 12)x + (9 × 1)
= - 24x + 9