Write the fractions 5/7 and 2/3 with a common denominator and determine which is greater

15/21 and 14/21  so 5/7 is greater

Step-by-step explanation:

21 is the least common multiple for 3 and 7 so you multiply 7 by 3 to get 21 and do the same with the numerator to get 15 and vice versa.

5/7 is greater

Step-by-step explanation:

5/7 * 3/3 = 15/21

2/3 * 7/7 = 14/21

So  5/7 is greater.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents