Solving for systems of equations by substitution.

Y=4x

X+y=5

My mother is 12 years more than twice my age. after 8 years she will be 20 years less than three times my age ... find my age and my mothers age

What is the value of y when x = 10? y = 7.5 y = 4.8 y=40/3 y = 5/12 ?

Two angles in a triangle measure 33° and 112° What is the measure of the third angle? 35° 55° 145° 215°

Justin ate 2/3 of pie, and joey ate 1/4 of the pie. how much of the pie is left?

A circular arena is lit by 5 lights equally spaced around the perimeter of the arena. What is the measure of each angle formed by the lights on the perimeter?

A problem on a multiple-choice quiz is answered correctly with probability 0.9 if a student is prepared. an unprepared student guesses between 4 possible answers, so the probability of choosing the right answer is 1/4.

The sum of two numbers is 47 and the difference is 9 what are the numbers?

List two properties of the polygon in the grid

what are the new coordinates after reflecting across x=2 if the coordinates are K (-2,-1) L (-2,-3) M (-5,-3) N (-5,-1)

What is x and y to 3y+7x=4 - 6x+y=-7