Choose True or False for each statement. Use the data in the table. -
The mean number of medals earned for the Summer Olympic years from 1972 to 2000 is 35. True/false?
If the data for 1980 is removed, the mean is unchanged. true/false?
If the USA earned more than 31 silver medals in the 2004 Summer Olympics, the new mean increased. true/false?
If the USA had earned 2 more medals in 1988, the mean would increase by 2.
True/false?

the correct answer is $7.38

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