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27.07.2019 •
Mathematics
The length of a rectangle is 3 inches more that its width. the perimeter of the rectangle is at least 30 inches. which inequality shows the possible range of widths of the rectangle? a. w ≥ 16.5 inches b. w ≥ 13.5 inches c. w ≥ 9 inches d. w ≥ 6 inches
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Ответ:
2(l + w) ≥ 30 in
Simplify- divide both sides by 2.
l + w ≥ 15 in
Substitute (w + 3) into l so only 1 variable is used.
(w + 3) + w ≥ 15 in
Simplify further- add variables and subtract 3 from both sides.
2w ≥ 12 in
Divide both sides by 2.
w ≥ 6 in
D
Ответ:
50
Step-by-step explanation:
the answer is 50 because you have to add 22+15+23=50 then you add the makes which is 8+7+10=25. Then time both by 2 because percent means per one hundred which means the bottom has to equal 100 so time 50x2=100, So 25x2=50