Ineed badly!

which equation below expresses 9 - 3 rewritten as an addition problem?

-3-9

9 + -3

3 + -9

9+3
1 points

question 8

which equation below expresses -7-8 rewritten as an addition problem?

-7+8

-7 + -8

7+8

-8+7
1 points

question 9

which equation below expresses 6 - (-10) rewritten as an addition problem?

6+10

6-10

10-6

-10+6
1 points

question 10

which equation below expresses -1 - (-2) rewritten as an addition problem?

-1+2

1+2

2+1

-2+1

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc