How do you write algebraic expressions to model quantities

2 answers:

7 0

The correct answer is:

We pick a variable to stand for the unknown. Then we search for key words that indicate which operations are being used. For instance, the word "sum" signals addition, "product" denotes multiplication, "difference" means subtraction, and "quotient" refers to division. The word "Is" corresponds to equals. We make sure to preserve the order items appear in the problem so the algebra matches the wording.

For example:

Two more than 3 times a number is 23.

Let the unknown be x.
Three times the number is 3*x = 3x.
Adding two to that yields 3x+2.
That expression "is" 23, so we set it equal to 23: 3x+2=23.

Zina [9.1K]1 day ago

3 0

To create algebraic expressions that represent quantities, translate the verbal description into mathematical terms following the sentence’s structure. For example, “one minus a number equals zero” becomes
1. 1 – n = 0.
Another example: John bought 25 apples and Julia bought 15. If Niccole bought twice as many as Julia, how many apples did Niccole buy?
Steps:First, restate the situation clearly so you can identify the relationship and how to form the expression. 
Solution:Julia = 15 apples Niccole = 2Julia Thus, 2Julia = 2(15) = 30 apples.

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Step-by-step details:

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It is known that;

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