Answer:
He can stand on one leg for 228 seconds.
Step-by-step explanation:
You multiply the 3.8 seconds by 60.
So, 3.8 * 60 = 228
Hope this helps :)
Answer: 1537.
Step-by-step explanation:
Formula for sample size :-

Given :
Margin of error : E= 100
Critical value of 95% confidence : 
Now, the required sample size will be :-

Hence, the minimum sample size required = 1537.
Answer:
y=1/2+1
Step-by-step explanation:
1) Y2-Y1 over X2-X1
<u>9-5=4</u>
12-4=8
4/8 simplify the answer= 1/2
m=1/2
2) subtitute the simplification to one of the points.
y=mx+b
5=1(4)+b
5=4=b
1=b
y=1/2+1
The answer is 2,16. Hope that helps.