3 years ago

Is 5/2 rational or irrational

Mathematics

1 answer:

raketka [301]3 years ago

4 0

Answer:

rational

Step-by-step explanation:

Since this can be written as the ratio of integers, this is a rational number

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B 280 D C What is the measure of angle ADB? A. 17°

loris [4]

Answer:

C. 62

Step-by-step explanation:

ADC is 90 degrees. 90 - 28 = 62

6 0

3 years ago

The mean score of 8 players is 14.5. If the highest individual score is removed the mean of the score of the remaining 7 players

AfilCa [17]

Answer:

The highest score is 32.

Step-by-step explanation:

We are given the following in the question:

The mean score of 8 players is 14.5.

Let x denote the highest score.

If x is removed, the mean of the score of the remaining 7 players is 12.

Formula for mean:

$\bar{x} = \dfrac{\displaystyle\sum x_i}{n}$

Putting values, we get:

$14.5 = \dfrac{\displaystyle\sum x_i}{8}\\\\\Rightarrow \displaystyle\sum x_i = 116\\\\12 = \dfrac{\displaystyle\sum y_i}{7}\\\\\Rightarrow \displaystyle\sum y_i = 84\\\\\displaystyle\sum y_i = \displaystyle\sum x_i -x \\\\84 = 116 - x\\\Rightarrow x = 32$