A rectangle flag had a width of 3 2\3 feet and area of 8 3/4 square feet . Which expression could be used to calculate the length , in feet , of the rectangle

Pretty sure it's 8 3/4  ÷ 3 2/3.

Why?

So say you want to find the length of a rectangle who's area is 6, and the width is 2. You can divide the area by the width to find the length. 6/2 = 3.

Check: 2 * 3 = 6.

Back to the original question: 8 3/4 ÷ 3 2/3.

Improper fractions: 35/4 ÷ 11/3.

Switch division to multiplication and reciprocal: 35/4 * 3/11.

35/4 * 3/11 = 105/44.

Check:

105/44 * 11/3 = 1155/132 = 35/4 = 8 3/4

Length = 105/44

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take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.