Mark the sum as either positive or negative 1.) -8+(-9)
2.) 7+(-3) 3.)
3.) 5+(-12)
4.) -12+ 15
SHOW WORK

Step-by-step explanation:

-8+(-9) = -17  <--- Negative    If they are both negative, then you do the simple math part and then add the negative sign

7+(-3) = 4  < Positive    If there are only one negative, then you get rid of the '+' and then the equation turns into 7-3. You would do the simple math.

5+(-12) = -7 < Negative.    Here, there is only one negative sign but the negative number is greater than the positive number. So, you would do the math 5-12 and use the negative sign.

-12+5 = -7 < Negative   Look at the one above this.

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

a. 32 degrees

step-by-step explanation:

here we have to use the rule.

m∠e = 1/2 (major arc - minor arc)

m∠e = 1/2 (212 - 148)

m∠e = 1/2 (64)

m∠e = 32 degrees

answer: a. 32 degrees

you