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pr47723
25.07.2019 •
Mathematics
Mark is training for a mini triathlon he rode his bike 3/4 of a mile, ran 5/6 of a mile , and swam 10/12 miles each day for 7 days. what combined distance did mark exercise during the week?
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Ответ:
STEP 1:
=3/4 + 5/6 + 10/12
need a common denominator of 12
=9/12 + 10/12 + 10/12
=29/12 miles in one day (or 2 5/12)
STEP 2:
=29/12 * 7 days
=(29*7)/12
=203/12 miles
=16 11/12 miles in 7 days (or 16.9166)
ANSWER: 16 11/12 miles in 7 days
Hope this helps! :)
Ответ:
It must have the same slope as the given line, so
m = -A/B = -1/-2 = 1/2
So far, we have
y = mx + b = x/2 + b
Use the given point to find b.
4 = -2/2 + b = -1 + b
b = 5
y = x/2 + 5
Multiply through by 2.
2y = x + 10
Standard form:
x - 2y = -10