Answer:
a = 20
Step-by-step explanation:
The mean is calculated as
mean =
= =
Then
= 27 ( multiply both sides by 5 to clear the fraction )
115 + a = 135 ( subtract 115 from both sides )
a = 20
1 & 2
1 answer:
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Hey there! I was looking at your question for a bit then realized you meant , the imaginary number, not "1" at the end of each number.
- Complex numbers are numbers involving both real and imaginary numbers; thus, this question wouldn't make much sense without the imaginary number
The expression we are given is:
Open parenthesis and combine like terms:
This is answer choice B (assuming it's supposed to be an and not a "1" at the end)
Let me know if you need any clarifications, thanks!
~ Padoru
Answer:
C. 15
Step-by-step explanation:
The following proportional can be set-up for the figure given:
Solve for x
Cross multiply
15 = 6x - 5x
15 = x
x = 15