Factorize:

(1 - a^2) (1 - b^2) + 4ab

You paid $28.80 for a shirt that was on sale for 20% off of the original price. What was the original price?

Find the sum of the first eight terms of the geometric series 1 + 2 + 4 + ...

Susan wanted to measure the height of her school's flagpole. She placed a mirror on the ground 72 feet from the flagpole, then walked backwards until she was able to see the top of the pole in the mirror.

4,693,593 to the nearest million

Rosie and her 5 sisters had a party and evenly shared the cost. They spent $615 on food and $255 to rent the hall. The bad played for 4 hours and charged them $150 per hour. How much did each sister contribute?

A leopard can't change its spots

A pizza restaurant charges $16 per pizza and a $4 flat fee for a delivery charge. If his total comes to $132, he ordered how many pizzas?

How to solve 7 2/6 + 8 5/6

A right triangle is shown below. 229x162 The triangle is dilated by a scale factor of 2.5 to create a new triangle. What is the perimeter of the new triangle? A 120 cm B 24 cm C 60 cm D 150 c

2^3 · 3 · 5 is the prime factorization of what number?