subject
Mathematics, 24.01.2022 01:00 lex4395

A variable can be used in an expression that represents a real-world situation where one value is unknown, not stated or can change. Let’s say Jenna is four years older than her sister. If you know that Jenna’s sister is 10, then Jenna is 4 + 10. Jenna is 14. If you don’t know how hold Jenna’s sister is, you can use a variable in an expression to represent Jenna’s age. If we call Jenna’s sister’s age “a,” then Jenna’s age is 4 + a. We could use any letter to represent the variable. 4 + b or 4 + z represent Jenna’s age, too. Which of these expressions requires a variable?

A
the expression for how much money Abe earns when he makes $15 an hour and works for three hours

B
the expression for the number of pencils Cody has if he starts with nine pencils and then gives four to Molly

C
the expression for the total number of cakes when Cindy brings one cake to class, and Bryan brings two cakes to class

D
the expression for how many birthday parties Pia has this June if she has one more birthday party than her brother

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 15:00
Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph
Answers: 3
question
Mathematics, 21.06.2019 18:30
An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3
Answers: 2
question
Mathematics, 21.06.2019 18:30
Identify the polynomial. a2b - cd3 a.monomial b.binomial c.trinomial d.four-term polynomial e.five-term polynomial
Answers: 1
question
Mathematics, 21.06.2019 19:00
When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30
Answers: 1
You know the right answer?
A variable can be used in an expression that represents a real-world situation where one value is un...
Questions
question
Mathematics, 18.09.2019 06:40
Questions on the website: 13722367