12 miles
If 1 inch equals 2.4 miles on an actual scale, then 5 inches would be 2.4 • 5 which equals 12 miles.
Step-by-step explanation:
its .86 which is closer to .87
so choose the first one
Answer: b) 84
Step-by-step explanation:
Let p be the prior estimate of the required proportion.
As per given , we have
p =0.5 (The probability of getting heads on a fair coin is 0.5)
Significance level : 
Critical z-value (using z-value table ) : 
Confidence interval width : w= 0.18
Thus , the margin of error : 
Formula to find the sample size ( if prior estimate of proportion is known.):-

Substitute the values , we get

Simplify ,
[Round of to the next whole number.]
Hence, the number of times we would have to flip the coin =<u>84</u>
hence, the correct answer is b) 84
Answer:
80°
Step-by-step explanation:
Just multiply 40° by 2 to get the arc