Nicole usually scores between 89%
and 100% on her math quizzes,
unless the quiz is the day after a track
meet. on the quizzes she takes right
after a track meet, she has about an
11% decrease in her scores. if nicole
had a track meet the day before a
quiz, what would she score on the
quiz?
a between 70% and 78%
b between 79% and 89%
c between 90% and 99%
d between 100% and 111%

B

Step-by-step explanation:

Nicole usually scores between 89% and 100% on her math quizzes.

On the quizzes she takes right after a track meet, she has about an 11% decrease in her score, so she will earn 100% - 11%  = 89% of her usual score.

1. 89% of 89% is

2. 89% of 100% is

So, if Nicole had a track meet the day before a quiz, her score would be between 79% and 89%.

correct answer:

b.(19,-2)

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m