For cynthia's fourth lab report, she calculated the ratio of velocities before and after the impact of a basketball bouncing on a court. this measurement is called the coefficient of restitution. she got the following four values.
0.72
0.75
0.73
0.76
the accepted value is 0.77.
cynthia's percent error was [blank]%.
enter your answer as the number that correctly fills in the blank, rounded to two decimal places, like this: 42.53

answer: h

step-by-step explanation:

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

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation: