Evaluate the expression using an appropriate double angle formula ... cos^2 (15) - sin^2 (15)

Using substitution 3x-5y=11 and x-3y=1

Roland's Boat Tours sells deluxe and economy seats for each tour it conducts. In order to complete a tour, at least 14 economy seats must be sold and at least 5 deluxe seats must be sold. The maximum number of passengers allowed on each boat in 45.

Write an expression that is equivalent to the following expression by factoring out the GCF 16y+18m

An 8% sales tax is applied to a $300 purchase in Texas. What is the total price with tax

together preston and horatio have 49 video games. horatio has 11 more then preston. how much does each person have

For the following geometric sequence find the recursive formula. {1, - 3, 9, ... } A. an = - 3 · an - 1 where a1 = 1B. an = - 3 · an - 1 where a1 = - 1C. an = - 1 · (-3) n - 1D. an = (-3) n - 1

What is the constant in the mathematical expression? 3 - 5x A. 3 B. - 5x C. x D. 5x

If p+q+r = 1 and pq+qr+pr = - 1, and pqr = - 1, find the value of

How do you solve 4/9-1/9

The pie chart is commonly used to present: A. budgets B. temperatures C. rain fall D. population growth