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AURORKA [14]
3 years ago
14

As instructor grades exams, 30%; term paper, 20%; and final exam, 50%. A student had grades of 75,80, and 85, respectively, for

exams, term paper, and final exam. Find the students final average. Use the weighted mean. Round your answer to one decimal place.
The students final average is ________?
Mathematics
1 answer:
Leni [432]3 years ago
6 0
Okay, so 75 counts for 30% (exams), 80 counts for 20% (term paper), and 85 counts for 50% (final exam)

So you would multiply 30% by 75, 20% by 80, and 50% by 85. That would be 22.5, 16, and 42.5. Add these numbers up, and put them over the total percentage, 100%. So you would have 81/100. The student's final average is 81%.
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Which of the following inequalities has no solutions?
neonofarm [45]

Answer:

  • A) x > 3 and x < 2 has no solutions

Step-by-step explanation:

Given inequalities below and we are looking for a pair with no solution.

Let's verify:

A) x > 3 and x < 2,

  • It has no solutions since the two inequalities have no common interval.

B) x > - 3 and x < - 2,

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C) x > - 3 and x < 2,

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D) x > - 3 and x > - 2,

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1 year ago
If you wanted to find the mean height of students in an elementary school,
Kryger [21]

It is not possible to select a single group from the primary school, since being a single group it could not in any way represent the entire primary school.

Choosing a group would provide the average height for that group, not the entire primary.

Assumptions can be made that the course of half of the primary would theoretically give us a more accurate representation, but the objective is to select a number of students from each course and there would be a representative sample of the entire primary.

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3 years ago
The division is 9. The dividend is 72 what is the quotient? <br><br><br><br> Helllllpppppp meeeeeeee
Nitella [24]

The quotient is 8.

Explanation: 72/9=8

5 0
3 years ago
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Which is a y-intercept of the continuous function in the table?
Sonja [21]

Answer:

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in Marlas school 6/15 of the students do not ride the bus to school. of these students 5/9 walk to school. what fraction of the
Debora [2.8K]

Answer:

The fraction of the students that walk in in Marla's school  is equal to \frac{2}{9}

Step-by-step explanation:

Let

x------> the total students in Marla's school

we know that

The number of students that not ride the bus is equal to

\frac{6}{15}x\ students

The number of students that walk to the school is equal to

\frac{6}{15}x*\frac{5}{9}=\frac{2}{9}x\ students

therefore

The fraction of the students that walk in in Marla's school  is equal to \frac{2}{9}

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3 years ago
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