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3 years ago

15

Each baseball team as nine players and each football team has eleven players. Six schools have both baseball and football teams.

Four schools have only a baseball team. How many players are there for all ten schools?

1 answer:

astraxan [27]3 years ago

3 0

6 x9= 54 and 6x11=66 so those two together equal 120 but 4x9=36 adding those would equal 156 which is the answer

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Solve the system of equations 3x – 3y = 30 and 2x + y = 11 by<br> combining the equations.

Andreas93 [3]

Times bottom equation by 3 and top by 2 to get the same coefficient of x
6x-6y=60
6x+3y=33
Minus the bottom by the top
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substitute this in to one of the equations
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A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values

nika2105 [10]

Answer:

For systolic pressure data:

$\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085$

For diastolic pressure data:

$\bar X =73.5\\\\S=12.54\\\\CV=\frac{73.5}{12.54}=0.17061$

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

Step-by-step explanation:

The coefficient of variation is defined as the percentage relative variation of a set of data with respect to its average. And it is calculated like this:

$CV=\frac{\bar X}{S}$

$S =\sqrt{\frac{1}{n-1} \sum_{i=1}^n (x_i-\bar{x})^2$

$\bar X={\frac{1}{n} \sum_{i=1}^n x_i$

For systolic pressure data:

$\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085$

For diastolic pressure data:

$\bar X =73.5\\\\S=12.54\\\\CV=\frac{12.54}{73.5}=0.17061$

It is observed that the systolic pressure shows greater standard deviation but less coefficient of variation. This is due to the greater magnitude of its measurement scale.

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

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Answer: each number represents the sum of the two numbers

Step-by-step explanation:

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How do you change 5.5 into a fraction?

Scrat [10]

5.5 in fraction is 5 1/2

hope that helps :)

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