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Hoochie [10]
2 years ago
14

Janie receives an allowance of $3 per week. in addition, she can earn $2 for each chore she does. this week, she wants to earn e

nough money to buy a CD for $13. janie can do fractions of chores. Write an inequality to determine the number of chores,c, janie must do this week to earn enough money to buy a cd
Mathematics
2 answers:
Makovka662 [10]2 years ago
8 0
13 = 2c + 3 is the inequality for one week
Elena-2011 [213]2 years ago
6 0

Let

c-------> the number of chores

we know that

3+2c \geq 13 --------> inequality

Solve for c

3+2c \geq 13\\2c \geq 13-3\\ 2c\geq10 \\ c\geq5

therefore

<u>the answer is</u>

The minimum number of chores that Janie must do is 5\ chores

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Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?
Yakvenalex [24]

Answer:

The algebraic expression which represents the phrase “two times the quantity of a number minus 12” is : 2x- 12

Step-by-step explanation:

Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.

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These expressions are represented with the help of unknown variables, constants and coefficients. The combination of these three (as terms) is said to be an expression. It is to be noted that, unlike the algebraic equation, an algebraic expression has no sides or equal to sign

let the quantity mentioned in the question be 'x'

therefore according to the statement the algebraic expression which represents the phrase “two times the quantity of a number minus 12” is : 2x- 12 is

⇒2x - 12 (answer)

more on algebraic expression at

brainly.com/question/20660076

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3 0
1 year ago
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2 years ago
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mihalych1998 [28]

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