maxB0846
28.06.2019 •
Mathematics
Marta's jump rope is 10 inches shorter than three times the length 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
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Ответ:
x = 75
Marta's jump rope is 75 inches long
Step-by-step explanation:
Hello!! This is how you solve it:
x + ( x - 10 x 3 ) = 120
2x - 10 x 3 = 120
2x - 30 = 120
+ 30. + 30
2x = 150
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2. 2
x = 75
Ответ:
The answer could be :
C. Positive