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Andrew [12]
3 years ago
7

Kristin spent $131 on shirts. Fancy shirts cost $28 and plain shirts cost $15. She bought seven total shirts. How many fancy and

plain shirts did Kristin buy? Write two equations.
Mathematics
1 answer:
Vika [28.1K]3 years ago
3 0

Answer:

2 fancy shirts and 5 plain shirts

Step-by-step explanation:

28x + 15x = 131

28(2) + 15(5) = 131

56 + 72 = 131

(there are no other equation i could find)

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The time taken by the rock will be 8.77 seconds.

<h3>What is speed?</h3>

Speed is defined as the ratio of the time distance traveled by the body to the time taken by the body to cover the distance.

Given that:-

The equation for free fall at the surface of some planet (s in meters, t in seconds) is s = 2.86t²

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t   =  25.1 / 2.86

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Therefore the time taken by the rock will be 8.77 seconds.

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