Derive a formula for sin (2?) in terms of sin (?) and cos (?) for all real numbers?.

Simplify this expression 1x/18x

8x+y=300 The elevator in a trade center is moving down from a height of 300 feet. The equation above can be used to model the height of an elevator, y, above the lobby. Where x is the time in seconds.

Evaluate 15 over k when k=3

He number on the bottom of a fraction is called the

Leroy uses 20 pounds of fertilizer to cover 4,000 square feet of his lawn and 50 pounds to cover 10,000 square feet. how much does he need to cover his entire yard which has an area of 26,400 square feet

What is the first step in solving for zin equation 5z - 4 = 26

A store is offering a 20% discount on all sales over $50. If you purchase a shirt and a pair of jeans for $62.50, what is the amount of the discount you would recieve?

What will be the overall fee and how to set up the equation. F (x) = 2x + 5

amanda put 1500 in a saving account after 5 years she had 1833in the account what rate of interest did she earn

Six hundred paving stones were examined for cracks, and 20 were found to be cracked. The same 600 stones were then examined for discoloration, and 29 were found to be discolored. A total of 562 stones were neither cracked nor discolored.