Answer:
6y+4
Step-by-step explanation:
(−y^2+y+2)−(y^2−5y−2)
=-y^2+y+2-y^2+5y+2
=6y+4
Answer:
the X and Y values should be equal
64 of them because 2 inch cubes are needed to completely fill a cubic box of edges 8 inches
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THe fraction is:
X
----------
2X + 5
Decreases the numerator and denominator by 1, the fraction becomes 3/8.
So now the fraction looks like this:
X-1 3
--------- = -----------
2x +5-1 8
Cross multiplies:
8(x-1) = 3 ( 2x +5 -1)
8x - 8 = 3( 2x + 4)
8x - 8 = 6x + 12 <--- distributive right side
8x - 8 - 6x - 12 = 0 <--- everybody moves left,changing signs, to keep leading coefficient of x term positive
2x - 20 = 0 <-- combines like terms
2x = 20 <--- solves for x
x=10
So the fraction 10/25.
(10-1)/(25-1) = 9/24 = 3/8