Factor completely.

4x^2-1

3) 6n - 7n - 5m? n - 7n + 2m + 6mn - 7n + 2m + 6m? n How do you simplify this expression by combining like terms?

The low temperatures of four cities for August 26, 2007 are as follows: Honolulu 73° Base Esperanza - 5° Nome 47° Washington, D. C. 72° List the cities in order from greatest to least temperature.

Prove that if m, d, and k are integers and d > 0, then (m + dk) mod d = m mod d.

1. In a table of random digits, Each digit is to occur with a probability of 0.1 A.) A student examines a list of 200 random digits and counts only eleven 4s and thus claims that the table is not really random.

Write a rule for multiplying two radicals with the same radicand. Justify why your rule works

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.