Cos x = 3/5

how do you solve this

Evaluate the expression for a = 4 and b = 3. A-81 B-24 C-36 D-144

Given the graph y = sin (x^4): Is it: 1.) Increasing or decreasing? 2.) concave up or concave down?

Jon buy packages of pen for $5 each, what is the dependent and independent variables in this situation

What is the unit rate of 60miles on 2.5 gallons

Does |w| = - 2 have one solution

Grace and Max worked together on a math problem. they had a rectangle piece of paper that 14 inches long and 11 inches wide they where asked to cut this piece of paper into 1/8 inches wide strips using the length of paper how many 1/8 inches wide

If s (x) = 2 - x2 and t (x) = 3x, which value is equivalent to (s. t) (-7)

Kevin and his sister, katy, are trying to solve the system of equations. Keven thinks the new equation should be 3 (6x-1) + 2y=43, while katy thinks it should be 3x+2 (6x-1) = 43. Who is correct and why

If 4x=32 find the value of 35-5x

On Saturday, a local hamburger shop sold a combined total of 520 hamburgers and cheeseburgers. The number of cheeseburgers sold was three times the number of hamburgers sold. How many hamburgers were sold on Saturday