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mylen [45]
3 years ago
11

Diane is participating in a 4-day cross-country biking challenge. She biked for 57, 67, and 45 miles on the first three days. Ho

w many miles does she need to bike on the last day so that her average (mean) is 59 miles per day?
Mathematics
1 answer:
ella [17]3 years ago
6 0

Answer:

139

Step-by-step explanation:

57+67+45=169÷3=139

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2 years ago
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Liono4ka [1.6K]
See the picture in the attached figure

we know that

There are six important properties of parallelograms to know:

<span>1) Opposite sides are congruent (AB = DC).
2) Opposite angels are congruent (D = B).
3) Consecutive angles are supplementary (A + D = 180°).
4) If one angle is right, then all angles are right.
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the answer is
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6 0
3 years ago
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