Answer:
(5/6, 8/5)
Step-by-step explanation:
We multiply the second equation by 2, and then add the equations together.
12x+15y=34
-12x+10y=6
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25y=40
We divide by 25 on both sides, and get that y = 8/5. We substitute y into either of the equations.
-6x +5(8/5)=3
Do the multiplication.
-6x+8=3
Subtract 8 from both sides.
-6x=-5
Divide by -6 on both sides.
x=5/6.
Answer:
c
Step-by-step explanation:
when its exponents it will add
This is a linear function so it is going to have a constant rate of change (i.e. constant velocity).
First differentiate:
s(t) = 3 - 4t
s'(t) = -4
s'(8) = -4
(The instantaneous velocity at any point will also be -4)
Insert units here if you have them. Like if the y axis says metres, and the x axis says seconds, then your answer should be -4m/s.
Hope this helps.
