2/20 = 1/10 = 3/30 = 4/40
so 3 equivalent ratios can be 1/10 (or 1:10), 3/30 (or 3:30), 4/40 (or 4:40)
Answer:
38° because the other two are cm? also you haven't linked a photo so I can't work out angle A
Answer:
The first one.
Step-by-step explanation:
A solid figure is a closed shape. If you do mental calculation, the first one is the only one that is solid, or closed.
I think the answer should be B
Answer:
45
Step-by-step explanation:
0.45 x 
= 100
0.45 x 100 = 45