Solve the system using the substitution method. 2x+y=7
x=3y
Demonstrate how you substituted to write an equation in one variable.

Using the given statements, state whether the conditional statement is true or false. p: 2 + 2 = 4 q: 7 + 1 = 7 is p q true or false?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?