Evaluate the expression (6a)(2b) if a=2 and b=-1
1 answer:
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Answer: 15 cm
Step-by-step explanation:
The formula for calculate the area of a rectangle is:
Where "l" is the lenght and "w" is the width.
You know that the area of this rectangle is 75 square centimeters and the width is 5 centimeters. Then, you can substitute these values into the formula and solve for the lenght. Then you get:
Therefore, the lenght of the rectangle is 15 centimeters.