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Nana76 [90]
3 years ago
8

Helpppppppppppppppppp please......

Mathematics
2 answers:
larisa [96]3 years ago
3 0

Answer:

Ratio of girls to total number of students: 4:12

Step-by-step explanation:

There are four girls, and eight boys.

In all there are 12 students.

So the ratio of girls to total number of students taking swimming lessons is 4:12

vivado [14]3 years ago
3 0
I would confirm that it’s 4:12 same answer like on imagine math !
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Area is 113.097

Step-by-step explanation:

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The lengths of a certain species of fish are approximately normally distributed with a given mean and standard deviation. Accord
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Answer:

c) 68%

Step-by-step explanation:

The empirical rule states that most of the data will be within three standard deviations in a normal distribution. The 68% of the data will be within one standard deviation, the 95% will be within two standard deviations, and 99.7% of the data will be within three standard deviations.

A normal distribution is a continuous distribution in which values around the mean are the most frequents. It can also be called a bell-shaped distribution.

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Selena is 6 years younger than Paul. In 15 years, Paul will be 4 times the age that Selena is now. Find their present ages.
s344n2d4d5 [400]

Answer:

<u>The ages of Paul and Selena are 13 and 7 years old.</u>

Step-by-step explanation:

Age of Paul = x

Age of Selena = x -6

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x + 15 = 4 (x - 6)

x + 15 = 4x - 24

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<u>Paul now is 13 years old and Selena is 7 years old. In 15 years, Paul will be 28, that is 4 times the present age of Selena.</u>

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3 years ago
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WILL GIVE BRAINLIEST. please help
kondor19780726 [428]

Answer:

x = 11.4 m

y = 21 m

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Step-by-step explanation:

measure of third angle must be 50 degrees (180 - (40 + 90))

you can take tan50° = 15/y and 'y' will equal approx. 21

to find 'x' you can take tan21° = (21-x) /25 and 21 - x = 25 · tan21°

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x = 11.4

man's shadow is the difference of 21 and 11.4, which is 9.6

4 0
2 years ago
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