-27 = -3p + 15 - 3p
Combine like terms.
-3p -3p = (-3-3)p = -6p
-27 = -6p + 15
Subtract 15 from each side to get the variable term on its own.
-27 - 15 = -6p + 15 - 15
-42 = -6p
Divide each side by -6 to find p.
p = -42 ÷ -6 = 7
Answer:
132 cm²
Step-by-step explanation:
Consider the shape as a trapezoid with a rectangle added on top.
The area of the trapezoid is (7+19)/2 × 8 =104
The area of the rectangle is 7×4 = 28
Add the two areas: 104+28= 132
OR consider the shape as a tall rectangle with the two triangles added to the sides.
The area of the rectangle is 7(4+8) = 84
The area of the triangles is 8(19-7)/2= 48
[Each triangle is 24 cm²]
Add those areas
84+48=132
Same result: 132 cm²
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