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3 years ago

The area of a rectangular invitation card is 3/10 square foot.

Mathematics

1 answer:

blsea [12.9K]3 years ago

7 0

9514 1404 393

Answer:

A. 3/8 ft

B. width would decrease

Step-by-step explanation:

A. The area of a rectangle is given by the formula ...

A = LW

Solving for W, we find ...

W = A/L . . . . . width is inversely proportional to length for the same area

Using the given dimensions, we find the width to be ...

W = (3/10 ft²)/(4/5 ft) = (3/10)(5/4) ft

W = 3/8 ft

The width of the card is 3/8 ft.

B. Width is inversely proportional to length for the same area, so an increase in length would result in a decrease of width.

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