Express the sum using sigma notation: 1+5/6+6/8+7/10+8/12
a. the summation from k equals 2 to 6 of the quotient of k plus 1 and 2 times k
b. the summation from k equals 2 to 6 of the quotient of k plus 2 and 2 times k
c. the summation from k equals 2 to 6 of the quotient of k plus 2 and 2 raised to the k power
d. the summation from k equals 4 to 7 of the quantity 1 plus the quotient of k plus 1 and k plus 2

step-by-step explanation:

i think you should think about the question and not look online.

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:

b

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant