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nawafcanada
05.10.2019 •
Mathematics
Asurvey found that 16% of all seventh graders at lincoln middle school think that tarantulas are the scariest creatures. there are 150 seventh-graders at the school. how would you write a percent equation to find how many seventh-graders said that tarantulas are the scariest creatures?
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Ответ:
Ответ:
L=3w-35
By inputting this into the equation to find the perimeter we get:
2(3w-35)+2w=190
Distribute
6w-70+2w=190
Add like terms
8w=260
Divide both sides by 8
w=32.5
The width is 32.5cm
To find the length input w into the equation for length
L=3(32.5)-35
L=97.5-35
L=62.5
The length is 62.5cm
Check that the solution is correct by inputting the solutions to the perimeter equation
2L+2w=190
2(62.5)+2(32.5)=190
125+65=190
190=190
I hope this helps :)