Michelle is building shelves for her room. She has a plank 137 inches long that she wants to cut into 7 shelves of equal length.
2 answers:
Answer:
19 inches.
Step-by-step explanation:
We have been given that Michelle has a plank 137 inches long that she wants to cut into 7 shelves of equal length. The plank has jagged ends, so she will start by cutting 2 inches off each end.
Since she cute 2 inches from each end, so she will cut 2*2 inches or 4 inches from both ends.
The length of plank left after cutting off jagged ends would be .
Now, we will divide 133 by 7 to find length of each shelf.
Therefore, the length of each shelf would be 19 inches.
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Observe that all the equations are the same.
Also note that all the lines are solid. This should tell you that the inequities should involve.
Therefore the answer is between option A and B.
So we choose a point in the solution region to discriminate between A and B.
Let us choose the origin since that is easy to evaluate.
We substitute into option A to get.
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I hope this helps you
Answer:
A ≈ 2 ft²
Step-by-step explanation:
The area (A) of a triangle using Heron's formula is
A =
where s is the semiperimeter and a, b , c the sides of the triangle.
s = =
=
= 4.5
Then
A =
=
=
≈ 1.9843...
= 2 ft² ( to the nearest square foot )