A: 2x + 8y = 5 b: x + 9y = 10 to solve this system of equations by elimination, what could you multiply equation b by if you want to add the equations together and have a resulting equation with only the y-variable (the x-variable is eliminated)? a) −2 b) 2 c) − 1 2 d) 1 2

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Proving the congruent supplements theorem