Comparing order of magnitude a biologist estimated the number of cells in a culture sample as 1.3 × 102. one week later, he looked at the same culture sample and estimated that the number of cells had grown to 3.9 × 105. determine how many times larger the culture sample was compared to a week earlier. (3.9 × 105) (1.3 × 102) complete the quotient in scientific notation and find the solution in standard notation. × =

3 * 10^3 in scientific notation.

3,000 in standard notation.

Step-by-step explanation:

We divide:

3.9 *10^5 / 1.3 * 10^2

= ( 3.9/1.3) * (10^5 / 10^2)

= 3 * 10(5-2)

= 3 * 10^3.

This  equals 3 * 1,000 = 3000.

the answer is 3 10 to the third power and 3,000

Step-by-step explanation:

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

rx and sx

step-by-step explanation: