Y=-7x-5
9=-7(-2)-5
9=14-5
9=9
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Answer:
depends to who ur talking to
Step-by-step explanation:
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cost of pencil = x = 0.07
and cost of eraser = y = 0.03
Step-by-step explanation:
let cost of pencil = x
and cost of eraser = y
So, we have equations:

Solving both equations to find value of x and y
Let:

Multiply eq(1) with 4 and eq(2) with 3 and subtract

Putting value of x in equation 1:

So, x= 0.07 and y = 0.03
cost of pencil = x = 0.07
and cost of eraser = y = 0.03
Keywords: System of equations
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Answer:
The square root of 10 is 3.16227766017
Step-by-step explanation: