If the length of rectangle is x + 4 and the width is 3x - 5 what is the perimeter?
2 answers:
Answer:
Step-by-step explanation:
The perimeter of a rectangle is 2L + 2W, where L represents the length and W represents the width. In this scenario, L is equal to x + 4 and W is equal to 3x - 5. We can setup an equation:
We can then multiply x - 4 by 2 to get
We can then multiply 3x - 5 by 2 to get
Adding them together, we get the answer as
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Answer: x = 20.
Step-by-step explanation:
x and (3x + 10) combine to form a right angle, shown in the diagram by the small square joining the perpendicular lines.
Right angles are 90 degrees, so you can add both angles to get 90: