3.457
0.251
9.354
The first number in front of the decimal (.), is in the tenths place. The number after the tenth place is the hundredth place. After that is the thousandths and it keeps going.
Answer:
![Speed = 1.875 miles/hour](https://tex.z-dn.net/?f=Speed%20%20%3D%201.875%20miles%2Fhour)
Step-by-step explanation:
Given
![Speed = 33in/s](https://tex.z-dn.net/?f=Speed%20%3D%2033in%2Fs)
Required
Convert to mile/hour
![1\ inch = 1/63360\ mile](https://tex.z-dn.net/?f=1%5C%20inch%20%3D%201%2F63360%5C%20mile)
![1\sec = 1/3600\ hr](https://tex.z-dn.net/?f=1%5Csec%20%3D%201%2F3600%5C%20hr)
So:
![Speed = 33in/s](https://tex.z-dn.net/?f=Speed%20%3D%2033in%2Fs)
![Speed = \frac{33 * 1/63360}{1/3600}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B33%20%2A%201%2F63360%7D%7B1%2F3600%7D)
![Speed = \frac{33/63360}{1/3600}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B33%2F63360%7D%7B1%2F3600%7D)
![Speed = \frac{33}{63360}/\frac{1}{3600}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B33%7D%7B63360%7D%2F%5Cfrac%7B1%7D%7B3600%7D)
![Speed = \frac{33}{63360} * \frac{3600}{1}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B33%7D%7B63360%7D%20%2A%20%5Cfrac%7B3600%7D%7B1%7D)
![Speed = \frac{33 * 3600}{63360}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B33%20%2A%203600%7D%7B63360%7D)
![Speed = \frac{118800}{63360}](https://tex.z-dn.net/?f=Speed%20%20%3D%20%5Cfrac%7B118800%7D%7B63360%7D)
![Speed = 1.875 miles/hour](https://tex.z-dn.net/?f=Speed%20%20%3D%201.875%20miles%2Fhour)
<em>Hence, John is working at 1875 miles per hour</em>
The answer is
![3 {x}^{2} - 19x - 14](https://tex.z-dn.net/?f=3%20%7Bx%7D%5E%7B2%7D%20%20-%2019x%20-%2014)
first you must multiply or use the FOIL method (First, Outer, Inner, Last)
First you multiply the first terms
![(3x)(x)](https://tex.z-dn.net/?f=%283x%29%28x%29)
this gives you 3x^2, then you multiple the outer terms
![( - 7)(3x)](https://tex.z-dn.net/?f=%20%28%20-%207%29%283x%29)
this gives you -21x, then you multiply the inner terms
![(2)(x)](https://tex.z-dn.net/?f=%282%29%28x%29)
that gives you 2x, finally you multiply the last terms
![(2)( - 7)](https://tex.z-dn.net/?f=%282%29%28%20-%207%29)
that gives you 14, now you combine like terms
![- 21x + 2x = - 19x](https://tex.z-dn.net/?f=%20-%2021x%20%2B%202x%20%3D%20%20-%2019x)
now you put all the terms together and end up with your solution
Answer:
Do you think this is easy
Step-by-step explanation: