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Helen [10]
3 years ago
13

The standard deviation of some student is 1.4 years, what is their standard deviation next year​

Mathematics
1 answer:
astraxan [27]3 years ago
5 0

Answer:

Step-by-step explanation:

1.4 years times 12=16.8

In one year there are 12 months so you add 1.4 times 12

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The heart rate of 10 football players is sampled. The rates measured in beats per minute are 62,74,74,64,76,6480,76,68,76
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Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s?
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A. 100/20

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3 years ago
The city library donated some children’s books to Mr.
azamat

According to the statement 160 books were given to the class.

The correct option is C.

<h3>What is linear equation?</h3>

One or two variables make up a linear equation. Neither the numerator nor the denominator of a fraction can be a variable in a linear equation raised to a power higher than 1. All of the points on a coordinate grid sit on the same line when you identify the values that together make a linear equation true and plot those values.

<h3>According to the given information:</h3>

Let the no. of students be s:

Let the no. of books be b:

Given that there will be 20 books left after each student selects 4 books,

b = 4s + 20

And the remaining students take 5 books each, therefore b=5(s3), even if 3 pupils choose not to take a book.

comparing the value b

4s+20=5(s−3)

4s+20=5s−15

s=20+15

s=35

To do this, change the value of s in b=4s+20 to what is shown below:

b=4(35)+20

b=140+20

b=160

160 books were given to the class.

To know more about linear equation visit:

brainly.com/question/766814

#SPJ4

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2 years ago
Can you help me with this???
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