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jolli1 [7]
2 years ago
15

In her seventh grade pre-algebra class, Ms. Cornelius gave a standardized exam prepared by the district math department. Student

s' scores on the exam were as follows:
100, 98, 98, 96, 96, 96, 94, 92, 88, 82.
What is the mean score?
Mathematics
1 answer:
Alik [6]2 years ago
3 0

Answer: 94

Step-by-step explanation:

The mean is the average of the numbers,

To find the mean add all the numbers and divide by how many numbers there are i.e count the numbers

In this case lets find the sum;

Sum = 100 + 98 + 98 +96 + 96 + 96 + 94 + 92 + 88 + 82

       = 940

Count the numbers : There are 10 numbers in total.

Therefore, The mean = 940/10

                                    = 94

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5 0
2 years ago
A rectangular sheet of cooper is twice as long as it is wide. From each corner a 3-inch square is cut out, and the ends are then
Galina-37 [17]

Answer:

length=24 inches and width=12 inches

Step-by-step explanation:

Let width of the rectangular sheet be x.

Then its length is twice as width = 2x

From each corner 3-inch square is cut to form a tray.

The length of the tray formed = l = 2x-6 (total length - length of 2 squares cut out from both ends)

The width of the tray formed  = b = x-6 (total width - length of 2 squares cut out from both ends)

Height of the tray formed = h = 3 inches

Volume of the tray = l*b*h = (2x-6)*(x-6)*3 = 324 cubic inches.

 2x^{2}-18x+36=108\\x^{2}-9x-36=0\\(x-12)(x+3)=0\\x=12

The length and width of the sheet is 24 and 12 inches respectively.

6 0
3 years ago
What is 6,051.2 rounded to the nearest thousand????
mylen [45]
6000 hope it helped
5 0
2 years ago
you deposit $7,900 in a money-market account that pays an annual interest rate of 4.3%. the interest is compounded quarterly. ho
Sladkaya [172]
<span><span>anonymous </span> 3 years ago</span>we are solving for A, A is the future amount A=? P is the present value, so we were told 7,900, so p=7900 r is the interest rate, so 4.3%, but in decimal form so r=0.043 k is the how often it is 'compounded', it says quarterly, so k=4 n is how long, 3 years, so n=3 <span>A=P(1+<span>rk</span><span>)<span>n∗k</span></span></span> plug in the values
<span>A=8981.51</span>
4 0
2 years ago
For every pound a company spends on advertising, it spends £0.80 on its website. Express the amount spent on advertising to the
matrenka [14]
80%
Explanation: cuz it is
6 0
2 years ago
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