Answer:

Step-by-step explanation:
If the triangles are similar, then the sides are in proportion.
We have the equation:
<em>cross multiply</em>
<em>divide both sides by 3</em>

<em>subtract 8 from both sides</em>
<em>divide both sides by 3</em>

Answer:
9. -2
10. 0
Step-by-step explanation:
It is not undefined because the slope of horizontal lines are 0
Answer:
(21 and 54): 3
(55 and 90): 5
(16 and 30): 2
(42 and 91): 7
(66 and 121): 11
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
Area of a parallelogram is Area = Base times Height. (A=B*H). here Base is 3 and Height is 7 so 7*3=21. 21 cm^2 is the answer.
Answer:
Probably, 3/1.
Step-by-step explanation:
Just do the reverse of the instructions and you get your answer.
1+2=3
2-1=1