Complete the steps to find the sum. (2.7 × 10–9) + (8.5 × 10–9)

1. Rearrange the expression: (2.7 + 8.5) × 10–9

2. Add the coefficients: (11.2) × 10–9

3. Write in scientific notation: 1.12 × 10k

What is the value of k in the solution?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca