Four pencils cost 5$ , how much will 12 pencils cost, I will give brainliest.

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

6 0

Answer:

This is a ratio problem.

To start, we can express "4 pencils cost $5" as a ratio:

=> 4 pencils : $5

Since we want to find out how many dollars 12 pencils cost, we see that we are multiplying the "pencils" section by 3, so we have to do the same to the dollar side.

=> 4 pencils * 3 : $5 * 3

=> 12 pencils : $15

Our answer is $15.

Step-by-step explanation:

nadya68 [22]3 years ago

3 0

Answer:

the answer is $60

Step-by-step explanation:

5x12=60

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${\huge{\boxed{\mathbb{QUESTION}}}$

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${\huge{\boxed{\mathbb{ANSWER\:WITH\:EXPLANATION}}}$

Hello there, first we can place our equation, which you have stated

$2d+9=19$ , this algebra, in algebra we want to find the exact value of the variable, or have the variable on one side of the equation.

First we can subtract $9$ with both sides of the equation giving us the result of $2d=10$ , this can also be represented as $2\cdot d=10$ , now just divide both sides of the equation by $2$ , our answer is $d=5$ .