You must first set up an equation for this problem. Your equation is 8+3x=128. If we subtract 8 from each side we get 3x=120. If we then divide both sides by 3 we get x=40. Therefore your number is 40 because 8+3*40=128.
Answer:
The answer is A, 13, -13.
Step-by-step explanation:
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Check the picture below
so you have the lateral area.. just add the area of the bases then, to get the total surface area of the rectangular prism
Answer:
50 or more
Step-by-step explanation: