Answer: -15/56
Step-by-step explanation:
Step-by-step explanation:
use the identity a²-b²=(a-b)(a+b)
x²-4=(x-2)(x+2)
so the answer is x-2
Answer:-1/12
Step-by-step explanation:
Answer:
![\boxed{33.5 \ \text{feet/second}}](https://tex.z-dn.net/?f=%5Cboxed%7B33.5%20%5C%20%5Ctext%7Bfeet%2Fsecond%7D%7D)
Step-by-step explanation:
To find the <u>unit rate,</u> we need to find out how much distance does the cyclist travel in 1 second. For that, we need to use the unitary method. A unitary method is a method that determines the unit rate of an object.
<u>Note:</u> Since the cyclist travels at a <u>constant rate</u>, unitary method can be used.
![\rightarrow 837 \dfrac{1}{2} \ \text{feet in 25 seconds}](https://tex.z-dn.net/?f=%5Crightarrow%20837%20%5Cdfrac%7B1%7D%7B2%7D%20%20%5C%20%5Ctext%7Bfeet%20in%2025%20seconds%7D)
![\rightarrow 837.5 \ \text{feet} = 25 \ \text{seconds}](https://tex.z-dn.net/?f=%5Crightarrow%20837.5%20%5C%20%5Ctext%7Bfeet%7D%20%3D%2025%20%5C%20%20%5Ctext%7Bseconds%7D)
<u>Divide both sides by 25:</u>
![\rightarrow \dfrac{837.5}{25} \ \text{feet} = \dfrac{25}{25} \ \text{seconds}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Cdfrac%7B837.5%7D%7B25%7D%20%5C%20%5Ctext%7Bfeet%7D%20%3D%20%5Cdfrac%7B25%7D%7B25%7D%20%20%5C%20%5Ctext%7Bseconds%7D)
![\rightarrow 33.5 \ \text{feet} = 1 \ \text{seconds}](https://tex.z-dn.net/?f=%5Crightarrow%2033.5%20%5C%20%5Ctext%7Bfeet%7D%20%3D%201%20%20%5C%20%5Ctext%7Bseconds%7D)
![\rightarrow \boxed{33.5 \ \text{feet/second}}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Cboxed%7B33.5%20%5C%20%5Ctext%7Bfeet%2Fsecond%7D%7D)
Learn more about unitary method: brainly.com/question/19423643