Answer: 92
Step-by-step explanation:
Formula : Sum of first n numbers = Average x n
Given: Average score on first 6 tests= 84
A score on all 8 tests = 86
Then, Sum of first 6 numbers = 84 x 6 = 504
Sum of first 8 numbers = 86 x 8 = 688
Sum of two last numbers = (Sum of first 8 numbers) - (Sum of first 6 numbers)
= 688-504
=184
Average of last two numbers = (Sum of two last numbers )÷2
= 184÷2
= 92
Hence, the average of your last two test scores = 92.
Answer:
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Step-by-step explanation:
Use the data given below to answer the following questions: 68, 63, 67, 66, 65, 87, 69, 61, 86, 82, 28
kobusy [5.1K]
I am on the same question, I will try to find it out.
Answer:
(1+i)2=2i
Step-by-step explanation:
Since the 2 is on the outside of the) then that means it is multiplying and if you multiply 1x2 it will equal.2
<u>Then if you were to multiply 2 x the i it will get 2i then you add it to get 2i</u>