Which of these is an example of a discrete random variable 1) hours worked at job, weight of a child, number of siblings, length of a fish

hours worked at job, number of siblings are examples of discrete random variable.

Step-by-step explanation:

Discrete random variable has values that can be counted. It has finite data that does not change continuously.

Hours worked at a job can be counted at the end of the day.

The weight of a child keeps changing continuously therefore it is not a discrete random variable.

Number of siblings can be counted.

The length of a fish can keep changing day by day therefore it is not a discrete random variable.

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step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

the area of ​​the surface of the rectangular prism here is 250 cm2, which is the surface of the shading

step-by-step explanation: