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Sphinxa [80]
3 years ago
9

write an equation that would allow you to solve the following problem. mart'a jump rope is 10 inches shorter than 3 times the le

ngth of dilbert's rope. if both of their ropes laid together end-to-end measure 120 inches long, how long is Marta's jump rope?
Mathematics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

Step-by-step explanation:

m=marta's rope

d=dilbert's rope

3d-10=m

m+d=120

Then you can substitute equation 1 into the second one

(3d-10)+d=120

3d-10+d=120

4d-10=120

4d=130

d=32.5

m+d=120

m+32.5=120

m=120-32.5

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