Please explain how to do this I don’t get it!

Mathematics

2 answers:

scoray [572]3 years ago

4 0

She has $20 she can use so the limit of money is 20. 7*2.50=17.5 and 4*.50=2 is she’d be using $19.50 she has 0.50 left so you would divide 0.50 by 0.12 which is 4.16 so she could get 4 pencils.

Ne4ueva [31]3 years ago

3 0

Do 7 •2.50 and do 4•.50 Add those values together. Subtract that value from the $20. Then divide what you have left by .12

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Answer: The greatest common factor is 2.

Step-by-step explanation: We are given to find the greatest common factor of the following expressions:

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<u>Greatest Common Factor:</u> The GCF of two or more numbers (expressions) is the greatest factor that divides all the numbers or expressions.

We have

$E_1=4k=2\times 2\times k,\\\\E_2=18k^4=2\times 3\times 3\times k\times k\times k\times k,\\\\E_3=12=2\times 2\times 3.$