Mr. Vasquez is 30 years older than his daughter, Gina. Which statements are true? Select all that apply.

Gina's age is not a variable. She is 30 years old.
Gina's age is a variable. You can use g to represent her age.
Mr. Vasquez's age is a variable. You can use m to represent his age.
Mr. Vasquez's age is not a variable. He is 30 years old.
The difference between Mr. Vasquez's age and Gina's age is a variable. You can use a to represent the difference.
The difference between Mr. Vasquez's age and Gina's age is not a variable. The difference is 30 years.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

one set of data has more variation than the other. hope this !

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

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