What is the missing power?

a) 10

b) 10000

c) 100

d) 1000

Step-by-step explanation:

With 0.80 × 10, we move the decimal up one place, so it equals 8.0 or 8

10000 × 0.002, we move the decimal up four places, so it equals 0020.0 or 20

0.04 × 100, we move the decimal up two places, so it equals 04.0 or 4

Lastly, 1000 × 0.5, we move the decimal up three places, so it equals 500.0 or 500

Using the powers of ten, we either move the decimal up or down according to the number of zeros.

78.59 is the mean

step-by-step explanation:

50-38=12

step-by-step explanation: