Answer:
D) x= -24
Step-by-step explanation:
The equation is y^2=16x and the directrix is x=-4
#1. 720 Nm
Work = force x distance
Work = 80N x 9m = 720 Nm
#2. 90J
Assume no energy lost in the process,
<span>Kinectic energy=(80N - 70N) x 9m
= 90J
#3. 630J
Heat energy = work - kinetic energy
Heat energy = 720J - 90J
= 630J</span>
Answer:
No, (3, 9) is not a solution of the system.
Step-by-step explanation:
y=3x
2x-y=6
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3(3)=9
2(3)-9=6-9=-3, not 6
A(b+c) = ab + ac
5(3x + 5) = 15x + 25
