The local high school is having tryouts for the cross country team. The school d

Question

The local high school is having tryouts for the cross country team. The school does not have a track, so the runners run around the school's football field. The cross country coach determines that the width of the field is seventy yards shorter than the length.

Part A

Write an expression that represents the perimeter of the football field. Let x represent the length of the football field. Include parenthese in your expression. Next, write an equivalent expression that does not include parentheses. What property or proerties did you use to simplify?Explain.

Explanation / Answer

Solution: -Let x represents the length of the football field

width = (x- 70)

Perimeter = 2( l+ b)

P = 2 ( x +(x-70))

P = 2(x+x-70)

P=2(2x-70)

P = 4x -140

Distributive property is used.It is used to multiply a single term and two or more terms inside a set of parenthese

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.