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Lady bird [3.3K]
3 years ago
8

students at springfield school can join either the orchestra or the marching band. students cannot join both groups. how many 7t

h graders are in the band?​

Mathematics
2 answers:
den301095 [7]3 years ago
8 0

Answer:56 students

Step-by-step explanation:

So look 6th grade total 42 and 8th is 72 and the total is 170 but he want 7th grade total so what I did is 42+72=114

Then I did 170-114=56 so the total of 7th grade is 56.

Law Incorporation [45]3 years ago
6 0

Answer:

56 students

Step-by-step explanation:

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The distribution of total body protein in healthy adult men is approximately Normal with mean 12.3 kg and standard deviation 0.1
Gelneren [198K]

Answer: a. 0.9876

Step-by-step explanation:

Given : The distribution of total body protein in healthy adult men is approximately Normal with mean 12.3 kg and standard deviation 0.1 kg.

\mu=12.3 and \sigma=0.1

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Then, the probability that their average total body protein is between 12.25 and 12.35 kg will be :-

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4 0
3 years ago
40% of the students passed both exams. 80% of the students passed the second exam. how many students (in percent) who passed the
navik [9.2K]

50%. students (in percent) who passed the second exam also passed the first exam.

Let's imagine that there are 100 kids in the teacher's class. We know that 40 of them passed BOTH tests, and 80 passed the second test.

Because if they weren't, they wouldn't have passed the first test and consequently wouldn't have passed both, we can be sure that the group of students who passed BOTH tests is only made up of the 80 who passed the second test.

Thus, both tests were passed by 40 of the 80 pupils who passed the second one:                                      

40/80 = 1/2 = 50%.

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7 0
1 year ago
8x – 8 = 7x + 4 <br> x = 12<br><br> How do they get 12?
Tpy6a [65]
By simplifying both sides of the equation then isolating the variable
8 0
3 years ago
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Triss [41]
The concept that can be used in order to answer this item is that of man-days. The total number of man-days required to do the job should always be constant. 

This can be illustrated by the givens above.
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Scenario 2:
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The equation for determining the value of e is equal to,
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The answer is the second choice. 
6 0
4 years ago
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1) Angles 4 and 5 are congruent because they are an example of what kind of special angle pair? (pic below)
Misha Larkins [42]

Answer:

B. Alternate Interior Angles

Step-by-step explanation:

7 0
3 years ago
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