replace the 1st equation into the 2nd one for y
-8x-4(2x-5) = -20
-8x-8x+20 =-20
-16x+20 = -40
-16x=-40
x = 5/2 = 2.5
y = 2x-5 - 2(2.5) - 5 = 5-5 = 0
one solution (2.5,0)
Answer:
A. They are the same.
Step-by-step explanation:
The sine of any acute angle is equal to its cosine.
Answer:
12.5 s
Step-by-step explanation:
If acceleration is constant, speed is proportional to time. To increase the speed by 50 km/h, the car will need an additional time given by ...
t/(50 km/h) = (20 s)/(80 km/h)
t = (20 s)(50/80) . . . . . multiply by 50 km/h
t = 12.5 s
It will take 12.5 more seconds for it to reach a speed of 130 km/h.
The answer for that is A. 40 cubic in
Answer:
1. -15c - 4
2. 3x - 5
3. 14q
4. -195 + 39m
5. 55b + 130
Step-by-step explanation:
