A light bulb consumes 2550 watt-hours in 4 days and 6 hours. How many watt-hours does it consume per day?

600 watt hours/day

Step-by-step explanation:

We're finding a unit rate here.  Divide 2550 watt-hours by 4 1/4 days (since 6 hours = 1/4 day):

2550 watt-hours

= 600 watt hours/day

         4.25 days

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.