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kifflom [539]
2 years ago
9

In a​ race, 27 out of the 50 finished in less than minutes. What percent of swimmers finished the race in less than 57 minutes?

Write an equivalent fraction to find the percent.

Mathematics
2 answers:
alekssr [168]2 years ago
7 0

Answer:

<u>27 x  2  </u>  = <u>54   </u> =        54%       54% of racers finished in less than 57 minutes

50 x  2    = 100  =

scoundrel [369]2 years ago
3 0
The answers will be 54%
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The capacity of an elevator is 12 people or 2088 pounds. the capacity will be exceeded if 12 people have weights with a mean gre
boyakko [2]

suppose the people have weights that are normally distributed with a mean of 177 lb and a standard deviation of 26 lb.

Find the probability that if a person is randomly selected, his weight will be greater than 174 pounds?

Assume that weights of people are normally distributed with a mean of 177 lb and a standard deviation of 26 lb.

Mean = 177

standard deviation = 26

We find z-score using given mean and standard deviation

z = \frac{x-mean}{standard deviation}

= \frac{174-177}{26}

=-0.11538

Probability (z>-0.11538) = 1 - 0.4562 (use normal distribution table)

= 0.5438

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8 0
3 years ago
URGENT!!!
Makovka662 [10]

Answer:

Train A - 50 miles per hour

train B - 30 miles per hour

Step-by-step explanation:

Let x mph be the speed of the train B, then the speed of the train A is (x+20) mph.

In 3 hours,

  • train A travels 3(x+20) miles
  • train B travels 3x miles

In total, they covered the distance of 240 miles, so

3(x+20)+3x=240\ \ \ \text{[Divide by 3]}\\ \\x+20+x=80\\ \\2x=80-20\\ \\2x=60\\ \\x=30\ mph\\ \\x+20=30+20=50\ mph

8 0
3 years ago
A contractor is installing tiles on a floor that measures 132 x 216 inches. If each tile measures 4 x 4 inches, how many tiles w
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Answer:

1782 tiles

Step-by-step explanation:

Given that:

Dimension fo floor = 132 x 216 inches

Area of floor = 132 * 216 = 28512 in²

Dimension of tiles = 4 * 4 inches

Area of tiles = 4 * 4 = 16 in²

Number of tiles needed to cover floor :

Area of floor / Area of tiles

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5 0
2 years ago
In a chemistry lab an experiment requires 500ml of one ingredient to be mixed with 1000 mL of another. how many ounces is the so
zavuch27 [327]

Answer:

50.72 us fl oz

Step-by-step explanation:

Given:

500 ml of ingredient to be mixed with 1000 ml of another ingredient.

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Now we need to convert ml into Ounces.

Formula:

\texttrm{us fl oz} = ml \times 0.033814= 1500 \times0.033814 = 50.72 oz

\therefore \textrm{Total solution contains} = 50.72 ounces

5 0
2 years ago
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