To use the elimination method, you can add the two equations in a system of equations to eliminate one of the variables. Add the two equations.
{−9x+y=1010x−y=−9

What is the resulting equation?
Answers :

A 0+2y=10 plus 2 y is equal to 1

B x+0=1x plus 0 is equal to 1

C x+0=19x plus 0 is equal to 19

D 19x+2y=19

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction