Write the expression as the sine, cosine, or tangent of an angle.

cos 8x cos 2x - sin 8x sin 2x

Que es potencia indicada

How do I find the equation of the line fo reflection?

In a lab a substance was cooled by 42C over a 7 hours at a constant rate. What was the change in temperature each hour?

A women worked part time at a video store she worked a total of 90 hours she worked for 3 weeks she worked five days a week she worked the same number of hours each day how many hours did the woman work?

What is the value of the numerical expression 5/8-5/12 (3-1/4) + 2/3

Suppose $x$,$y$, and $z$ form a geometric sequence. if you know that $x+y+z=18$ and $x^2+y^2+z^2=612$, find the value of $y$.

A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, the same worker produced 138 units while working 36 hours.

What is a balanced equation using numbers 9,7,2,1,6?

Part of the population of 10,800 hawks at a national park are building a nest. A random sample of 72 hawks shows that 12 of them are building a nest. Estimate the number of hawks building a nest in the population.

Olivia has $220 to buy presents for her 3 sisters and 2 nephews. She wants to spend $10 more on each sister than she spends on each nephew.