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2 years ago

I need all three answers again please help

Mathematics

1 answer:

choli [55]2 years ago

8 0

Answer:

Step-by-step explanation:

3) Sales tax rate = $\frac{42.42}{499}*100$

= 8.50

= 9%

4) Rate of commission = $\frac{1400}{28000}*100$

= 5 %

5) Reduction = $\frac{30}{100}*5000$

=$ 1500

New price = 5000 - 1500

= $ 3500

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150 ft

Step-by-step explanation:

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25 time 12 is 300. divide 300 by 2 and get 150.

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A student's course grade is based on one midterm that counts as % of his final grade, one class project that counts as % of

Andrei [34K]

Answer:

The overall score is 75.6

Letter grade is C

Step-by-step explanation:

The question has missing details (See comment section for complete question).

From the complete question, we have:

Proportion:

$Midterm = 15\%$

$Project = 25\%$

$Assignment = 40\%$

$Exam = 20\%$

Scores

$Midterm = 66$

$Project = 90$

$Assignment = 75$

$Exam = 66$

Solving (a): The overall score

To do this, we simply calculate the mean of the given data.

The mean is calculated by multiplying each proportion by the scores..

So, we have:

$Overall = 15\% * 66 + 25\% * 90 + 40\% * 75 + 20\% * 66$

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Solving (b): The letter grade

From the question, we have:

$A: Mean \ge 90$

$B: 80 \le Mean < 90$

$C: 70 \le Mean < 80$

The overall score falls in the following category:

$C: 70 \le Mean < 80$

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$70 \le 75.6 < 80$

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