Explain 81-16 in mental math

Find the center and radius of x2 + y2 + 2x - 10y + 10 = 0

A tv is on sale for 135. this is 65% of it original price. what is the original price as an algebraic equation

Find the inverse function g (x) of the function f (x) = 2x+1

Connie says that main st appears to be parallel to elm st is connie correct

A little while ago, a dolphin was swimming below sea level at - 7 meters. Now the dolphin is jumping at 0.5 meters. What does this mean?

What are some examples of the golden ratio involving art?

Ashton left his house and ran 4 miles east and 3 miles north he took the diagonal path back home if he burned 105 calories every mile that he ran how many total calories did he burn on this run

Solve 3x-5y=13 4x+8y=-9

Lewis needs 1/8 quart of paint to cover 10 square yards. How many square yards can he paint with 4 quarts of paint?

It is recommended that you have 8 servings of water per day. A serving of water is about 237 mL. If Carmelo drank 7 servings, about how many liters of water did he drink?