)The ratio of X's to O's is 15 over 10. . Use the image below to determine another ratio for X's to O's: Image with 15 Xs and 10 circles. The 15 Xs are broken down so that there are 3 Xs 5 times and the circles are broken down so that there are 2 circles 5 times. 2 over 3.
3 over 2.
10 over 15.
5 over 1.

2:3

Step-by-step explanation:

The common factor between 10 and 15 is 5.

5 goes into 10 twice and 15 three times.

÷

c

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870