Rose ran 2 1/4 miles, Jane ran 2 3/8 miles, and Sarah ran 2 7/10 miles. How many miles did the three girls run altogether? A. 6 7/10 miles B. 6 15/40 miles C. 7 13/40 miles D. 8 3/40 miles

C

Step-by-step explanation:

first, make them all have common denominators, which in this case the common denominator would be 40. whatever number you multiply the denominator by to get 40, multiply the numerator by the same number.

for example, for 2 1/4 you'd multiply the denominator by 10 to get 40, so you'd also multiply the numerator by 10, so you'd get 2 10/40.

Rose ran: 2 10/40 miles,

Jane ran 2 15/40 miles,

Sarah ran 2 28/40 miles.

then, you can add, and you'll get 6 53/40 miles, which is 7 13/40 miles.

C.

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:

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step-by-step explanation: