9^2= 9.5^2 + 4^2 - 2 (9.5) (4) (cosr)

i'm trying to find out the angle measure of r

The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is find the pressure exerted when the temperature of the gas is 380 degrees f show work for the

Which of the following is correct interpretation of the expression -4+13

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)