What is the relationship between 8.76 x 10e6 and 8.76 x 10e2? 8.76 x 10e6 is (blank) times greater or less than 8.76 x 10e2?

To find how many times greater you have to divide.In this question the bases are the same. This means you can use the exponent law for division.
The exponent for division sates that if you are dividing numbers with the same base but different exponents you can subtract the exponents. 
(8.76 x 10e6)divided by (8.76 x 10e2)
The answer of that is 8.76x10e4
This is because e6-e2 is e4
Therefore 8.76x10e6 is 10e4 times greater than 8.76x10e2

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!