Answer:
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Your answer should be C. X = 12
Steps to --> 10+ 6(-9 - 4x) = 10(x - 12) + 8
10 + 6 (-9 - 4x)
= 10 - 54 - 24x
= -24x - 44
10 (x - 12) + 8
= 10x - 120 + 8
= 10x - 112
-24x = 10x - 68
-24x - 10x = 10x - 68 - 10x
-34x = -68
-34x/-34 = -68/-34
x = 2
4 sticks and 2 brushes
(10.5*4)*(24*2)=90
To find the median cancel out numbers on both sides, until one is left in the middle and if there are two in the middle add them up and divide by two.
So in this case the median is
53+78
131 / 2
65.5
Because 19 is a prime number
