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DIA [1.3K]
2 years ago
14

You score 90 on the midterm, 60 on the final, and 80 on the class project. What is your average score if the midterm is worth 30

%, the final is worth 50%, and the class project is worth 20%?
Mathematics
1 answer:
Art [367]2 years ago
3 0

Answer:

The average score is 73

Step-by-step explanation:

Your average score is the sum of each of your tests scores multiplied by the weight of the test.

We have that:

You scored 90 on the midterm

The midterm is worth 30%

You scored 60 on the final

The final is worth 50%

You scored 80 on the class project

The class project is 20%

Average score:

A = 90*0.3 + 60*0.5 + 80*0.2 = 73

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A $250 gaming system is discounted by 25%. It was then discounted another 10% because the box was opened by a customer. a. The s
iris [78.8K]

Answer:

a. Sale Price=\$168.75

b. Total percent discount=32.5\%

Step-by-step explanation:

First Discount:

Initial Price=\$250

Discount=25\%

25\%\ of\ 250=\frac{25}{100}\times 250=62.5\\\\Now\ Price=250-62.5=$187.5

Second Discount:

Price=187.5\\\\Discount=10\%\\\\10\%\ of\ 187.5=\frac{10}{100}\times 187.5=18.75\\\\Now\ Sale\ Price=187.5-18.75=\$168.75

Effective Discount:

Initial Price=\$250

Final Price=\$168.75

Total discount=250-168.75=81.25

\%\ discount=\frac{81.25}{250}\times 100=32.5\%

3 0
2 years ago
Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m?
kondaur [170]
-2m -5m-8=3+(-7)+m equals -1/2 so 2, 4, 5 all apply
6 0
2 years ago
Suppose that in a population of 1000 there are 300 defective items and 700 items that are not defective. if you are selecting tw
natulia [17]
This is a combinations problem.

The total number of possible 2-item combinations is (1000 choose 2)

The number of 2-defective combinations is (300 choose 2)

The probability = \frac{300 C 2}{1000 C 2} = 0.09
4 0
2 years ago
Find an explicit rule for the nth term of the sequence. -5, -25, -125, -625, ...
Keith_Richards [23]
An=a1(r)^(n-1)
a1=first erm
r=common ratio

firs term is -5
we times each term by 5 to get next term so r=5

a_n=-5(5)^{n-1} is the explicit formula
8 0
2 years ago
Determine a series of transformations that would map polygon ABCDE onto<br>polygon A'B'C'D'E'?<br>​
vovangra [49]

Answer:

A reflection followed by a translation

Step-by-step explanation:

A reflection across they x-axis would put all the points in the right section and on the right y value. The x value would need to be changed though. So, you would need to do a translation of 4 on all points.

3 0
2 years ago
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