Quadratic Equations and Rectangular Dimensions

The video tutorial explains how to determine the dimensions of a rectangular lot given its area and a relationship between its length and width. It involves setting up a quadratic equation, solving it using the quadratic formula, and verifying the solution by calculating the area. The process includes simplifying expressions and rounding results to the nearest tenth.

What is the relationship between the length and width of the rectangular lot?

• The length is six feet less than four times the width.

• The length is equal to the width.

• The length is six feet more than four times the width.

• The length is four times the width.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the area of the rectangular lot?

• 216 square feet

• 200 square feet

• 180 square feet

• 250 square feet

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CCSS.HSA-REI.B.4B

What is the first step in solving the quadratic equation derived from the area formula?

• Multiply both sides by 2.

• Add 216 to both sides.

• Factor out the greatest common factor.

• Divide both sides by 4.

Which formula is used to solve the quadratic equation for the width?

• Linear equation

• Pythagorean theorem

• Quadratic formula

• Area formula

What is the purpose of using the quadratic formula in this problem?

• To determine the length of the lot

• To calculate the area of the lot

• To solve for the width of the lot

• To find the perimeter of the lot

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CCSS.8.EE.A.2

What is the approximate width of the rectangular lot?

• 10.2 feet

• 8.1 feet

• 7.5 feet

• 9.3 feet

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CCSS.6.EE.C.9

How is the length of the lot calculated once the width is known?

• By adding six to four times the width

• By dividing the width by four

• By subtracting six from four times the width

• By multiplying the width by four

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CCSS.8.G.B.8

What is the approximate length of the rectangular lot?

• 28.7 feet

• 22.3 feet

• 26.4 feet

• 24.5 feet

Why is there a slight error in the calculated area using the rounded dimensions?

• Because the dimensions were rounded to the nearest tenth

• Because the length was miscalculated

• Because the formula used was incorrect

• Because the width was miscalculated

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the final step in verifying the dimensions of the lot?

• Verify the area using the calculated dimensions

• Recalculate the length

• Check the perimeter of the lot

• Recalculate the width

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3