The answer is x= 2, y = 6
Solve for y in the second equation, so you have y= -3x + 12. Now plug that in for y in the first equation: 5x + 3( -3x +12) = 28.
Now simplify: 5x + -9x + 36 = 28: -4x = -8; so x = 2.
Now plug x=2 into either equation to solve for y:
3(2) + y = 12; 6 + y = 12; so y = 6
Answer:
equation: y=-4x-7
Step-by-step explanation:
y=-4x+b
solve for b using given coordinates on the line (-3, 5)
5=-4(-3)+b
b=-7
Answer:
Step-by-step explanation:
10 miles in 80 minutes = 1 mile in x minutes
10/80 = 1/x
10x = 80
x = 80/10
x= 8 miles per minute <===
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14 lbs rice for $ 8 = 1 lb rice for x $
14/8 = 1/x
14x = 8
x = 8/14
x = 0.57 per lb <=== thats 57 cents per lb
7.4z-5(-1.6z+2.4)
7.4z+8z-12
15.4z-12
Hope this helps :)
