7. Which of the answer choices has matrix multiplication defined? А
B
с
D
2 3
6 77
8 9
8
-4 0
[5 9 7]
6
7
1
O
BA
o
CB
DC

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

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?