What is the value of x

in the equation

x-2y=30, when y=15

10 percent of 50 percent of a number is 30 less than one quarter of the number, what's the number?

What are the solutions to the equation 0=x^2-x-6? X=-3 X=-2 X=0 X=2 X=3

At an annual salary of $55,000 per year, what is the amount of semimonthly paychecks?

Calculate (-3 5/6) - 4 1/2

a 10k rock is dropped from a height of 20m and hits the ground below at a speed of 60m/s. Calculate the gravitational potential energy before it was dropped

X/6 - 5 = 13 What does "x" equal in this equation?

Find all solutions in the interval [0, 2π). 7 tan^3x - 21 tan x = 0 A) pi/3, 2pi/3, 4pi/3, 5pi/3 B) 0, pi/5, π, 6pi/5 C) 0, pi/3, 2pi/3, π, 4pi/3, 5pi/3 D) 0, pi/3, π, 4pi/3

Which group of numbers is listed from least to greatest? -4, |-2|, |3|, 5, |-7| |-6|, - 4, |-2|, - 1, 0 -8, |-5|, - 4, |3|, 6 -6, |-3|, - 3, 6, |-9|

Solve the equation using the properties of equality. x/4 + 3 = 15

A triangle has two sides mausuring 8.5 cm and 15 CM. What are the least and greatest while number possibilities for the third side?