Answer with Step-by-step explanation:
Since we have given that
a) Explain why you would also like to know the standard deviations of the battery lifespans before deciding which brand to buy.
As we know that A battery with large standard deviation will last for few hours whereas A battery with small standard deviation will last for more hours.
If the standard deviation is small, then we are sure about the number of hours would be more and battery would be efficient.
b) Suppose those standard deviations are 2 hours for DuraTune s and 1.5 hours for RockReady. You are headed for 8 hours at the beach. Which battery is most likely to last all day? Explain.
![\sigma_{Duratunes}=2\\\\\sigma_{Rockyready}=1.5](https://tex.z-dn.net/?f=%5Csigma_%7BDuratunes%7D%3D2%5C%5C%5C%5C%5Csigma_%7BRockyready%7D%3D1.5)
Since standard deviation of Duratunes is more than standard deviation of Rockyready.
We need to headed for 8 hours at the beach.
So, Rockyready battery is most likely to last all day as it has small standard deviation.
c) If your beach trip is all weekend, and you probably will have the music on for 16 hours, which battery is most likely to last? Explain.
Again Rockyready battery is most likely to last as it has smaller standard deviation between the two.
Huum i am not quite sure but i think it is 4.97pounds each apple !!
D) People per hour, because the dependent quantity is the people
The dependent quantity is the quantity that relies on other variables of the situation. Therefore, the hours it takes relies on the amount of people that come into the theme park. People will continuously come into the park, they do not depend on anything. This is why it can not be C.
Answer:
![\boxed{\text{\$336.35}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Ctext%7B%5C%24336.35%7D%7D)
Step-by-step explanation:
Yuan earned $336.3457.
You are asked to round this number to the nearest hundredth, that is, so there are only two digits after the decimal.
$336.34|57
A rule in rounding numbers is: if the first figure to be dropped is 5 with any nonzero digits following it, then the last figure kept should be rounded up (increased by 1).
The number becomes $336.35.
![\boxed{\large \textbf{\$336.35}} \text{ was placed in Yuan's checking account}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Clarge%20%5Ctextbf%7B%5C%24336.35%7D%7D%20%5Ctext%7B%20was%20placed%20in%20Yuan%27s%20checking%20account%7D)
Trust me: You must know how to do this basic factoring yourself.
x^2 -5x - 6 factors into (x-6)(x+1). Note how I got that: -6 is the product of 1 and -6, and -6 + 1 = -5.
You could also factor this by grouping:
x^2 -5x - 6 = x(x-6) + 1(x-6). Note how the middle terms combine to produce -5x and how (x-6) is a factor common to both terms; this leaves (x+1). So the factors are (x-6)(x+1).