Shun is going to flip a fair coin 450450450 times.
Complete the following statement with the best prediction.
The coin will land tails up...

half the time

Step-by-step explanation:

its a coin, with two sides, so its a 50/50 change, so 225225225 times, approximately

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18