Niland, California is located at 141 feet below sea level. Hoosier Hill, Indiana is 1,257 feet above sea level. What is the change in elevation from Niland to Hoosier Hill?

step-by-step explanation:

part a: 1.08

part b: 27.59

answer:

c) the x-coordinate of the center of the circle increases by 3

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