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Mazyrski [523]
2 years ago
8

Lydia recorded the grade-level and instrument of everyone in the middle school School of Rock below.

Mathematics
1 answer:
neonofarm [45]2 years ago
6 0

Answer:

31/42

Step-by-step explanation:

there are 42 students in 8th grade

31 dont play keyboard so 31/42 = 73.8% chance

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If an exam is 75 questions long, a 100% being the highest grade, and 79% and below is failing, how many questions can you miss i
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6 0
3 years ago
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Ali surveyed 200 students at a school and recorded the eye color and the gender of each student. of the 80 male students who wer
Aloiza [94]
Total number of students surveyed = 200
Number of male students = 80
Number of female students = 200 - 80 = 120

Number of brown eyed male students = 60
Probability of a brown eyed male student = 60 / 80 = 0.75.

Since, <span>eye color and gender are independent, this means that eye color is not affected by the gender. Thus, we expect a similar probability of brown eye for female as we had for male.

Let the number expected of brown eyed females be x, then x / 120 = 0.75.

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7 0
3 years ago
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7 0
3 years ago
11. Circle all of the examples that are perfect square. (You must circle all correct responses to receive credit)
Law Incorporation [45]

Good evening ,

Answer:

Circle 0 , 4 , 16

Step-by-step explanation:

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4 0
3 years ago
A woman is paid a commission of 6% on her weekly sales. If her total commission for the week was $449:
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Answer:

$4.49

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6 0
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