D. , this is a good way because this way you can easily multiply and then you'll see your answer right in front of you.
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I think the scale of the factor of area is 2
2x+x-7+3x-20=87cm
6x-27=87
6x=114
x=19
Therefore the sides are:12cm, 38cm, and 37cm
Answer:
The student incorrectly simplified 10ab root 2a + 20a root 2a
Step-by-step explanation:
