Answer:
=-4x-1
Step-by-step explanation:
Since each min is 60 seconds you multiply 60 by the number of minutes which is 7 and you get 420:
60x7=420 Then you add 30 seconds equaling 450 seconds total
Then you divide 450 by 4 since she ran 4 laps.
So, Stephanie ran 112.5 seconds per lap
Remark
Start with the product
Let the unknown number = x
The unknown number x is multiplied by 6
At this point you get 6x
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Now you add 15
6x + 15 = 9
Solve
6x + 15 = 9 Subtract 15 from both sides.
6x = 9 - 15 Collect the terms on the right.
6x = - 6 Divide by 6
x = - 6/ 6
x = - 1
Answer:
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Step-by-step explanation:
Answer:
yes
Step-by-step explanation: