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svp [43]
3 years ago
15

In a town in Canada, the temperature was 20 °F at sunset. The temperature decreases by 2 every hour. How many hours does it take

for the temperature
to fall from 20 °F to -6 °F?
AO 3 hours
B.O 7 hours
C. 13 hours
D. 14 hours
Mathematics
1 answer:
Pavel [41]3 years ago
7 0

Answer:

C. 13

Step-by-step explanation:

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Find the value of x. Polygon angle sums
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Answer:

x = 50

Step-by-step explanation:

In a polygon, the angles add up to 360°:

x + 10 + 2x + 3x + x = 360

7x + 10 = 360

7x = 350

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On an exam, Mafuyu scored in the 20th percentile. If there were 50 students in the class, how many students scored lower than he
Reptile [31]

Using the percentile concept, it is found that 10 students scored lower than he did.

<h3>What is the meaning of the percentile of a measure?</h3>

When a measure is in the xth percentile of a data-set, it is greater than x% of the measures and lesser than (100 - x)%.

In this problem, he scored on the 20th percentile, that is, higher than 20% of the 50 students. Then:

0.2 x 50 = 10.

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More can be learned about percentiles at brainly.com/question/24495213

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6 0
2 years ago
Please help on this one?
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3 years ago
Rylie paid $12 for two cans of racquetballs as shown in the tape diagram, where the green bars represent the amount she spent, a
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A dog won a race at the local fair by running 3 and one fourth miles in exactly 2 hours. At this constant​ rate, how long does i
Novosadov [1.4K]

Answer:

\frac{4}{5} hour

Step-by-step explanation:

Let x represent time taken by dog to run the 1 and three tenths ​-mile state fair​ race.

We have been given that a dog won a race at the local fair by running 3 and one fourth miles in exactly 2 hours.

We will use proportions to solve our given problem as:

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We will equate both speeds as:

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\frac{\frac{13}{10}}{x}=\frac{\frac{13}{4}}{2}

\frac{13}{10\cdot x}=\frac{13}{4\cdot 2}

Cross multiply:

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\frac{10\cdot x}{10}=\frac{4\cdot 2}{10}

Therefore, it will take \frac{4}{5} hour to complete 1\frac{3}{10} mile state fair​ race.

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