Answer:
15/97?
Step-by-step explanation:
Just Minus the 82 and 97 to be the probability against it happening.
Sorry if I'm wrong
Z= -21.33 approximately because you divide both sides of the equation by 3, resulting in -64/3, which is about -21.33
A. For each year a person ages his or her maximum heart rate decreases by 220 beats per minute.!
The answer to #1 is 0.
In order to find the answer to this one (or any of these problems, simply follow the order of operations. In the case of #1, we first want to stick the 0 in for a and then continue.
![\frac{a}{b} +\frac{a + 1}{b} +\frac{a - 1}{b}](https://tex.z-dn.net/?f=%20%5Cfrac%7Ba%7D%7Bb%7D%20%2B%5Cfrac%7Ba%20%2B%201%7D%7Bb%7D%20%2B%5Cfrac%7Ba%20-%201%7D%7Bb%7D%20%20%20%20)
![\frac{0}{b} +\frac{0 + 1}{b} +\frac{0 - 1}{b}](https://tex.z-dn.net/?f=%20%5Cfrac%7B0%7D%7Bb%7D%20%2B%5Cfrac%7B0%20%2B%201%7D%7Bb%7D%20%2B%5Cfrac%7B0%20-%201%7D%7Bb%7D%20%20%20%20)
![\frac{1}{b} +\frac{-1}{b}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7Bb%7D%20%2B%5Cfrac%7B-1%7D%7Bb%7D%20%20%20%20)
Since these two numbers cancel, you will get the answer as 0. For the rest of these, follow the basic steps provided by your teacher in PEMDAS.