10 + 20 = 30 total balls.
Picking red = 10/30 = 1/3
After picking one ball there are 29 balls left.
Picking a yellow next is 20/29
Then there are 28 balls left and 19 yellow left, so picking another yellow would be 19/28
The probability of picking red first then two yellow = 1/3 x 20/29 x 19/28 = 95/609
What form of measurement do we convert it to?
![121 + b^2 = 12.1^2](https://tex.z-dn.net/?f=121%20%2B%20b%5E2%20%3D%2012.1%5E2)
Square 12.1, and subtract 121 from both sides.
![b^2 = 146.41 - 121](https://tex.z-dn.net/?f=b%5E2%20%3D%20146.41%20-%20121)
Complete the subtraction on the right side.
![b^2 = 25.41](https://tex.z-dn.net/?f=b%5E2%20%3D%2025.41)
This is the solution.
Answer:
Step-by-step explanation:
A driver spent 45minutes to cover a distance of 120km
Convert minutes to hour
- 45 min = 45 /60 hr = 3/4 hr
Use the distance equation
Find the speed
Substitute the distance and time value and find the value of speed
- s = 120 / (3/4) = 120 * 4/3 = 160 km /h