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3 years ago

Karen began her tennis game at 9:30. She played for two and a half hours.What time did she finish?

Mathematics

1 answer:

Ilya [14]3 years ago

7 0

12:00 because 2:30+9:30= 11:60 but because that's not how time works its 12:00

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A candle burned at a steady rate. After 33 minutes, the candle was 11.2 inches tall. Eighteen minutes later, it was 10.75 inches

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Answer:

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Step-by-step explanation:

Let the length be represented by:

$L = mt+L_0$

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As per the question statement, let us put the given values in the equation.

$11.2 = m\times 33 + L_0 .... (1)\\10.75 = m\times 51+L_0 ..... (2)$

Subtracting (1) from (2):

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2 hours mean 120 minutes.

$L = -0.025 \times 120 + 12.025\\\Rightarrow L = 9.025\ inches$

Therefore, the height of candle is <em>9.025 inches</em>.

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