Solve
And explain please
Answers
Answer: The answer should be 8 1/4 inches of cable to make A and B.
- Step-by-step explanation: If you are figuring out how much cable Arman uses with only the two models, there is no need for subtracting in this situation.
- First, you will need to add together the amount of cable that is required to make both A and B. However, they do not have the same denominator.
- To find a common denominator for the two numbers, find the smallest number that each denominator will divide into or multiply the denominators together. In this case, the number four (4).
- Therefore, the mixed number equivalent to 4 1/2 is 4 2/4.
- Now you need to add the two numbers, but no need to worry about finding a common denominator for the amount of cable needed for B, as for it already having the denominator "4."
- You may add this in two ways, adding the mixed numbers then regrouping or turning both mixed numbers into improper fractions, add, then turn it back into a mixed number. In this case I will just add then regroup.
- First add 4 + 3, which equals 7. Then add the fractions 2/4 + 3/4 = 5/4, which equals to 1 1/4. Now, you add 7 + 1 1/4 which equals 8 1/4 inches of cable.
- If you are to add by turning both mixed numbers into improper fractions then adding and regrouping, you can do so like this...
- First turn 4 1/2 (4 2/4) into an improper fraction. It will look like this: 9/2 which is equivalent to the improper fraction 18/4. Then, turn 3 3/4 into an improper fraction, which will be 15/4. Now you add 18/4 + 15/4, which equals to 33/4. Now, you regroup the improper fraction, or divide: 33 divided by 4 is 8 1/4. (8.25)