First work out the parenthesis:
9x⁴y⁴ / 3y²
Then get rid of the denominator using 9/3=3 and y⁴/y² = y²
3x⁴y² is the simplest form.
Answer:

Step-by-step explanation:
The radius is the distance between the center and any point on the circle.
The formula of a distance between two points:

We have the center (3, -3) and other point on the circle (7, 6).
Substitute:

Answer:
x= 19/7
Step-by-step explanation:
No solution as they are parallel lines. so, inconsistent
We set up a proportion: 80/?= 32/100
Cross multiply: 32*?= 80*100
⇒ ?= 80*100/32= 250
80 is 32% of 250.