Find the center of the circle whose equation is 3x² + 3y² = 75.

Center = (0,0)

Step-by-step explanation:

The standard form of a circle is

          ..... (1)

where, (h,k) is the center of the circle and r is radius.

The given equation is

Divide both sides by 3.

          ..... (2)

On comparing (1) and (2) we get

h=0, k=0, r=5

Therefore, the center of the circle is (0,0) and radius of the circle is 5.

1696 hundred thousand

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