Determine whether the random variable is discrete or continuous. In each case, state the possible values of the random variable. (a) The number of hits to a Web site in a day. (b) The amount of rain in City Upper B during April. (a) Is the number of hits to a Web site in a day discrete or continuous?

a) So the number of hits to a website is a discrete value that can assume any natural value from greater or equal to 0.

b) So the amount of rain in City Upper B during April is a continuous(real set) value ranging from 0 to infinite.

Step-by-step explanation:

Continuous:

Real numbers, can be integer, decimal, etc.

Discrete:

Only integer(countable values). So can be 0,1,2...

(a) The number of hits to a Web site in a day.

A website either has no hits, 1 hit, 2 hits, ..., that is, countable values.

So the number of hits to a website is a discrete value that can assume any natural value from greater or equal to 0.

(b) The amount of rain in City Upper B during April.

No rain, 0 units

We can have, 1.5 inches, 20 inches(using inch as an example of unit), that is, real numbers.

There is no negative amount of rain.

So the amount of rain in City Upper B during April is a continuous(real set) value ranging from 0 to infinite.

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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step-by-step explanation:

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls