Answer:
55 mph
Step-by-step explanation:
Speed = Distance/Time so Time = Distance / Speed.
If the first speed is x mph, the first trip will take 660/x hours.
The second trip will take 660/(x+5) hours.
We want to find x such that (660/x) - 660/(x+5) = 1 (i.e. solving this equation for x).
Multiply both sides by x*(x+5):
660*(x+5) - 660x = x*(x+5)
660x + 3300 - 660x = x2 + 5x
x2 + 5x - 3300 = 0
(x - 55)*(x + 60) = 0
So either x = 55 or x = -60. Since x > 0, x = 55mph.
Answer:
the slope is over 3 then down 3 or 3/-3
step explanation: first find the y-intercept (9) then normal you just count the number of spaces over or back then up or down
Answer:
y = -1x + 13
Step-by-step explanation:
y = -1x + b
5 = -1(8) + b
5 = -8 + b
13 = b
A. 4x b. 3y c. 8p is the answer
C,
because he checks at 12:00 on the dot or that's what they're implying, so it can't be D
and the mail is always there at noon, so b is out of the question,
and a, well common sense it
