∠A and \angle B∠B are vertical angles. If m\angle A=(3x-9)^{\circ}∠A=(3x−9) ∘
and m\angle B=(x+3)^{\circ}∠B=(x+3)
∘
, then find the value of x.

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14