Answer:
![x=1](https://tex.z-dn.net/?f=x%3D1)
Step-by-step explanation:
![x^2-2x+1=0\\](https://tex.z-dn.net/?f=x%5E2-2x%2B1%3D0%5C%5C)
We will start by using the quadratic formula.
![\frac{-(-2)+-\sqrt{(-2)^2-4(1)(1)}}{2(1)}](https://tex.z-dn.net/?f=%5Cfrac%7B-%28-2%29%2B-%5Csqrt%7B%28-2%29%5E2-4%281%29%281%29%7D%7D%7B2%281%29%7D)
We will simplify that and get:
![\frac{-(-2)}{2(1)}](https://tex.z-dn.net/?f=%5Cfrac%7B-%28-2%29%7D%7B2%281%29%7D)
So our answers would be:
![x=1](https://tex.z-dn.net/?f=x%3D1)
Answer:
C. One-fourth mile over thirty-six seconds = 25 miles per hour.
We have been given that an elephant can run one over four of a mile in 36 seconds.
To find elephant's rate in miles per hour, we will convert our given time in hours as shown below:
Therefore, option C is the correct choice.
Step-by-step explanation:
Answer:
150
Step-by-step explanation:
1. 4^3 = 4 x 4 x 4 = 16 x 4 = 64
2. 64 - 4 = 60
3. 60 ÷ 2 = 30
4. 30 ⋅ 5 = 150
<span>Karen got an average of 0.444 hits out of 45 bats.
We need to find the number of hits did Karen got.
=> 45 bats all in all
=> 0.444 average hits
x = how many hit did she get
Now, let’s multiply the total bats to Karen’s average hit:
=> 45 x 0.444 …. (repeating decimals)
=> 20
Therefore, Karen hit 20 times out of 45 bats
Let’s check our answer:
=> 20 / 45
=> 0.44444…. (repeating decimals)
</span>