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Building Equations to Solve Real-World Problems: Mastery Test
Select the correct answer.
The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 Inches, what is the length?
O A.
12 inches
B.
15 inches
C. 21 inches
D.
40 inches
Reset
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15 Inches

Step-by-step explanation:Remember that the Perimeter of a rectangle is the distance around it.

So,

   Perimeter = Length + Width + Length + Width

or

    P = 2L + 2W

If P=42 inches and W = 6 inches,

   42 = 2L + 2(6)

   42 = 2L + 12

   30 = 2L              [subtract 12 from both sides]

   15 = L               [divide both sides by 2]

The length (L) is 15 inches.

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol