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Answer:
13.
Step-by-step explanation:
x+x+5=21
2x+5=21
2x=16
x=8
Answer:
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Answer:
1/2
Step-by-step explanation:
First square area = 4cm^2, thus the side length is 2cm
Second square area = 16cm^2, thus the side length is 4cm
This gives a ratio of 2/4, simplifying yields 1/2
