Answer:
x = -4 and y = 1
Step-by-step explanation:
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If you factored this the outcome would be,
(q+3)(3p^2-4)
4 legged tables : x
3 legged stools : y
x + y = 20 y= 20 - x
4x + 3y = 68
Replace y by 20 - x so we only have one letter
4x + 3(20 - x) =68
4x + 60 - 3x =68
x + 60 = 68
x = 8
To find y replace x by 8
y = 20 - 8
y = 12
So you have 8 four legged chairs and 12 three legged stools.
Hope I helped!
You need to split the shape into two then measure the shapes like trapezoids use a+b/2(h) for the formula
0.7 is just 7 tenths which is literally 7/10.