Step-by-step explanation:
So first off we want to find out how many miles Nina can ride in 3,600
For this we have to convert 63,360 feet into miles
If there are 5,280 feet in one mile than we need to see how many times 5,280 goes in to 63,360
divide 63,360 by 5,280: you get 12
This means that she can bike 12 miles in 3,600 seconds
3,600 seconds is the same as an hour
Answer:
Nina can bike 12 miles per hour
To solve this problem, we should note that there are:
total questions = 100
questions answered correctly = 90
questions that needed additional clues = 10
1. The first question is to find the probability that in the
third question, Mary would need additional clue. Therefore this implies that in
the first and second questions, Mary would answer it correctly. Therefore:
Probability = (question 1 answered correctly) * (question 2 answered
correctly) * (question 3 needed clue)
Probability = (90/100)*(89/99)*(10/98)
Probability = 0.08256 = 8.26%
2. The second question finds for the probability that two
consecutive needs additional clue, therefore:
Probability = (question 1 needed clue) * (question 2 needed
clue)
Probability = (10/100)*(9/99)
Probability = 9.1*10^-3 = 0.91%
Answer:
17x + 16
-7x - 1
-6x - 13
2x + 3
2x - 1
9x + 8
2x - 13
10x - 11
- 8
Step-by-step explanation:
Did this all in my head so apologies if its incorrect! Mostly just collecting like terms and distributive property.
It would help to have the question. But I'll guess
![\sqrt[4]{x^{\frac 3 5}}{\sqrt{x^2}} = ((x^{\frac 3 5})^{\frac 1 4}) }{ x} = x^{\frac 3{20}} x = x \sqrt[20]{x^3}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7Bx%5E%7B%5Cfrac%203%205%7D%7D%7B%5Csqrt%7Bx%5E2%7D%7D%20%3D%20%28%28x%5E%7B%5Cfrac%203%205%7D%29%5E%7B%5Cfrac%201%204%7D%29%20%7D%7B%20x%7D%20%3D%20x%5E%7B%5Cfrac%203%7B20%7D%7D%20x%20%20%3D%20x%20%5Csqrt%5B20%5D%7Bx%5E3%7D)
2nd choice.
I forgot the explanation because I was so glad to have puzzled out the question.
The fourth root is the same as the 1/4 th power.
If we know x is positive
![\sqrt[4]{x^{\frac 3 5}}{\sqrt{x^2}}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7Bx%5E%7B%5Cfrac%203%205%7D%7D%7B%5Csqrt%7Bx%5E2%7D%7D)
We multiply the powers:
The one-twentieth power is the twentieth root. We bring the additional factor of x to the front.
![= x \sqrt[20]{x^3}](https://tex.z-dn.net/?f=%3D%20x%20%5Csqrt%5B20%5D%7Bx%5E3%7D)
Answer:
vertically opposit angle this is the reason of this qn
