Answer: x = 8
Step-by-step explanation: 8x +36 = 5x + 60
8x - 5x = 60-36
3x = 24
x = 24/3
x = 8
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Answer:
i dont know
Step-by-step explanation:
Answer:
She should have used One-half (9.4) (11.9) to represent the area of a single triangle
Step-by-step explanation:
The pyramid is composed by 4 triangles and 1 square
area of the square: base² = 9.4²
area of each triangle = 1/2*base*height = 1/2*9.4*11.9
surface area of the pyramid = 4*area of each triangle + area of the square = 4*(1/2*9.4*11.9) + 9.4²