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Matt's steps will be more complicated since Annie is using a program to do the constructions hers would probably be precise and easy.
Answer:
X=18
Step-by-step explanation:

Here you have to use cross multiplication
Answer:
The length of side a is 30
Step-by-step explanation:
because the side of an angle is the side it's pointing at which is BD. BD = a = 30
0.6 x 0.2 = 12 and .9 - .12 = .78
It may be confusing because the decimals aren’t like whole numbers.