Aculture of 1.75× 10^18 bacteria is in petri dish a. a culture of  6.25× 10^15 bacteria is in petri dish b. how many times greater is the number of bacteria in petri dish a than petri dish b?

To determine the extent of how many times greater is the number of bacteria in petri dish A than petri dish B, we simply have to take the ratio of the two.

1.75 x 10^18 / 6.25 x 10^15 = 280

So the bacteria in petri dish A is 280 times larger.

In scientific notation:

2.8 x 10^2

Hope this helps :)

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.