Find the value of x in the system, using substitution

y=2x; 4x-y=-4

K divided by 2 is 40

How do you write an interger whose absolute value is greater than itself.

A sine function can be used to model light waves. Green light has a wave length, or period of about 510 nm. which equation best models green light? a. y = sin pi/510 theta b. y = sin pi/255 theta c. y = sin 510/pi theta d. sin 255/pi theta

Steve had $10 in his drawer. He put in an additional $5 before his parents doubled his money.

Convert the improper fraction to a mixed number. 17/3 = ? A - 3 1/3 B - 5 2/3 C - 6 1/3 D - 3 1/6

Write a quadratic equation with the roots 3/4 and - 5

A system of equations has no solution. If y=8x + 7 is one of the equations, which could be the other equation has no solution. If y=8x + 7 is one of the equations, which could be the other equation

How do you write down 6.24 divided by 2.4 showing work?

3x^3+3x^2-21x+4/x-2 long divide

Solve the equation b^2-13b+36=0