Don’t mind this look at pic

57%

Step-by-step explanation:

So since the total is 10730 we will do

100/10730 = 0.00931966449

then that times what the amount of uni students that currently receive aid

0.00931966449*6101 = 56.8592730662

round to the nearest percent

56.8592730662 ---> 57%

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

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