Answer: 43
Step-by-step explanation:
The different statements and reasons to prove that −3(x + 8) = −21 are as detailed below.
<h3>How to utilize properties of Algebra?</h3>
Statement 1; −3(x + 8) = −21
Reason 1; Given
Statement 2; −3(x + 8)/-3 = −21/-3
Reason 2; Division property of Equality
Statement 3; x + 8 - 8 = 7 - 8
Reason 3; Subtraction Property of Equality
Statement 4; x = -1
Reason 4; Given
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Net A is the correct net.
The surface area of the prism is 72 in squared
SA= 1/2bhH
SA= (0.5)(4)(5)(7.2)
SA= 72 in. squared
