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3 years ago

The temperature fell from 0 degrees to 6 3/5 degrees below 0 in 2 1/5 hours. What was the temperature change per hour?

Mathematics

2 answers:

Kobotan [32]3 years ago

8 0

Answer:

-3 degrees per hour

Step-by-step explanation:

cestrela7 [59]3 years ago

7 0

Answer: -3 degrees per hour.

Step-by-step explanation:

Given: The temperature fell from 0 degrees to $6\frac{3}{5}$ degrees below 0 in $2\frac{1}{5}$ hours.

The change in temperature= $0-6\frac{3}{5}$

$=-\frac{33}{5}$ degrees

Time taken to change the temperature= $2\frac{1}{5}=\frac{11}{5}$ hours

Now, the temperature change per hour is given by :-

$\frac{\text{Change in temperature}}{\text{Time}}=\frac{-\frac{33}{5}}{\frac{11}{5}}\\\\=\frac{-33\times5}{11\times5}=-3\text{ degrees per hour}$

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4 years ago

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laila [671]

Answer:

<u>The correct answer is B. ∠X = 28.6°, ∠Y = 31.2°, ∠Z = 120.2°</u>

Step-by-step explanation:

Let's recall that for solving a SSS triangle, we :

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2. Use The Law of Cosines again to find another angle

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1. Cos x = (9² + 15² - 8.3²/2 * 9 * 15)

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