2 When you solve a system of linear equations by adding or subtracting, what needs to be true about the variable terms in the equations?

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

they are simplified

step-by-step explanation:

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17