Find Y. I need to check if my answers are correct for these, you don't have to add a explanation, thank you so much to whoever does this. 1 point for each question :D! 1.) -2(x + 3y) = 18

2.) 5x + 10 = 10y

3.) 5y + 8 = 2y – 3x + 5

4.) 3y = 15x – 12

5.) x + 5y – 10 = 2x

6.) 8x – 4y = -4

7.) 9x + 3y = 3

8.) 5(x + y) = 20 + 3x

9.) 3y – 21 = 12x

10.) 2x + 3y = 3

11.) x – 2y = 4

12.) -2x - y = -3

51

step-by-step explanation:

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

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.