Deandra is doing her math homework. out of 24 problems total, she completed the first 12 problems in 1 hour and the last 12 problems in 3 hours. what is the unit rate for all 24 problems? 4 problems per hour 6 problems per hour 8 problems per hour 12 problems per hour

Unit rate for all 24 problems is:

6 problems per hour

Step-by-step explanation:

Out of 24 problems total, Deandra completed the first 12 problems in 1 hour and the last 12 problems in 3 hours.

Total time taken by Deandra to complete her homework=(3+1) hours

                                                                                              = 4 hours

i.e. she did 24 problems in 4 hours

i.e. she did 24/4 problems in 1 hour

i.e. she did 6 problems in 1 hour

Hence, unit rate for all 24 problems is:

6 problems per hour

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.

the answer is:

mean: 6

mad: 2.14