Okay so 300 meters per minute and he ran 8 minutes..
300x8=2400
He still had 600 left to go...
2400+600=3,000
He had to run three times longer than Eric...
3000/3=1000
Does that make sense?
Answer: D.) 3
Step-by-step explanation:
Given: Mean diameter: ![\mu=28\ cm](https://tex.z-dn.net/?f=%5Cmu%3D28%5C%20cm)
Standard deviation: ![\sigma=1.3\ cm](https://tex.z-dn.net/?f=%5Csigma%3D1.3%5C%20cm)
The required number of standard deviations is given by :-
![z=\frac{X-\mu}{\sigma}\\\\\Rightarrow\ z=\frac{31.9-28}{1.3}\\\\\Rightarrow\ z==3](https://tex.z-dn.net/?f=z%3D%5Cfrac%7BX-%5Cmu%7D%7B%5Csigma%7D%5C%5C%5C%5C%5CRightarrow%5C%20z%3D%5Cfrac%7B31.9-28%7D%7B1.3%7D%5C%5C%5C%5C%5CRightarrow%5C%20z%3D%3D3)
Hence, a beach ball with a diameter of 31.9 cm is 3 standard deviations differ from the mean.
Answer:
exponential form of ( 2^5 )^3 = 2^15
hence, the answer is ,
![2 {}^{15}](https://tex.z-dn.net/?f=2%20%7B%7D%5E%7B15%7D%20)
1. None are correct it would be either 1/3, 2/6, 3/9, 4/12, 5/15
2.B
3.C
4.C