3.12 × 104. 3.12E4 = 3.12 × 10 × 10 × 10 × 10 = 31,200 ...
A <u>counterexample</u> is something that proves a statement, or equation, wrong. A counterexample is used in math when someone creates a theorem, writes an equation, or creates a new rule and someone proves it to be false.
<u>For Example:</u>
Let's say that I said <em>an even number plus an odd number always equals an even number</em>. A counterexample of that would be 4 + 5 = 9, because 9 is odd, therefore proving the statement wrong.
Answer:
Step-by-step explanation:
Step 1:
2 : 11 Ratio
Having a ratio is the same thing as dividing so if you divide 2 by 11 you get 2/11.
Step 3
2 ÷ 11
Answer:
C. 2/11
Hope This Helps :)
1500$/750tickets=2$
(2.50$+1.50$)/2=4/2=2$ <span>weighted average
this mean 50 50
750/2=375
</span>375 adult tickets and 375 children's tickets
Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.
Step-by-step explanation:
Since we have given that
Sample size = 400
Mean = $357.75
Standard deviation = $37.89
At 95% confidence level, z = 1.96
We first find the margin of error.
Margin of error is given by
95% confidence interval would be
Hence, the margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.
