Ernesto has a jump rope that is 10.5 feet long. To make the jump rope the ideal length for his height, Ernesto needs to cut off 0.3 of the jump rope. If Ernesto does this, how much of the jump rope will he cut off? (A) 0.305 foot
(B) 0.315 foot
(C) 3.05 feet
(D) 3.15 feet

y -5 = (-1/4)(x + 8)

step-by-step explanation:

d

step-by-step explanation:

i used the pitagoras theoreme

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

no

explanation:

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