6. A used book store started selling used CDs(x) and videos(y). In the first week, the store sold a combination of 52 CDs and videos. They charged $6 per CD and $9 per video and the total sales were $230. Write the system of equations you would need in order to figure out how many CDs and videos were sold.​

f

step-by-step explanation:

f

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

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