If you have an average of 97.2 on your current exam and you get a 99 on your next exam, your average will increase.
- Mean in mathematics is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the total number of values.
- To find the average, sum all the values in the set. Then divide the total by the number of values.
We have the current examination mean, xold = 97.2
Now, we receive, x = 99 on the next examination, the new mean will be:
xnew = (xold + x)/N
xnew = (97.2+99)/2
xnew = 196.2/2
xnew = 98.1
The new average is 98.1
98.1 > 97.2
So if you score 99 on your next exam, your average will increase.
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A^2 + b^2 = c^2
a^2 + 5^2 = 8^2
a^2 + 25 = 64
a^2 = 64 - 25
a^2 = 39
a = 6.2449 = 6.2
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Answer:
8^2-9^2/17(-7+6) = 1
Step-by-step explanation:
8^2-9^2/17(-7+6) = 64 - 81 / 17 * (-1)
= -17/ -17 = 1
Answer:
Mark up = 39.09%
Step-by-step explanation:
Cost price = $11
Selling price = $15.3
Profit = Selling price - Cost price
= 15.3 - 11
= $4.3