Cos2a = 2cos^2a-1 for all values of a

true or false?

У - бх - 11 - 2x - Зу = - 7

Find the inverse of y = 2x squared?

Find the difference between the actual and the estimated values of 55 - 21

A box contains several copies of Mrs. Spencer's new pamphlet. The box weighs 2,000 grams. This chart shows the effect of adding or taking away a pamphlet.

2. You have just signed an annual contract with TELUS for a cell phone. The base rate is $22 per month and $0.44 per minute. There are no free minutes included with this contract.

A polygon with 5 sides is shown with its exterior angles. The exterior angles are 62 degrees, 66 degrees, 77 degrees, 59 degrees, and (12 x) degrees. What is the value of x? 6 8 10 12

Sandra plans to excersise the same number of minutes m each of the remaning three days this week in order for sandra to excersise for exactly 150 minutes this week what is the value of m

Joe borrowed 2000$ from a bank at a rate of 7% simple interest per year how much interest did he pay in 5 years? you have 550 in a bank account that earns 3% simple interest each year how much will be in your account in 10 years

Nicole has $9 to spend on cards. She finds friends with the same amount of money to split the cost of a set. One set costs $27. Each friend gets the same number of cards. How many cards does each friend get?

find the variation constant and an equation of variation where y varies directly as x and y=45 when x=5