Hello there!
Based from this question above, what this is asking is to find how much does 17% goes into 400 marbles.
We want to know how many marbles are in this 400 marbles. (This would be the key point)
We do (17% x 400).
By putting the "%" symbol this allows us the understand that we are trying to find out how many blue marbles they're going to be.
By multiplying them both together, we got our answer as (68) marbles.
Your correct answer would he 68.
I hope this helps you!
90 I’m sorry if I am wrong I got that in paper :)
Lets solve for x.
0.8x = 50. - Remember that the jacket was 80% of the original price.
Thus, divide by x.
x = 50 / 0.8
x = 62.5
Answer:
A)4.1%
Step-by-step explanation:
First you need to add all the payments together to get your total.
1400+300+150+800+300+150+100+100+150+200=3650
Then you cross multiply and divide to get the percentage.
=![\frac{x}{100}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B100%7D)
When you cross multiply and divide x≈4.1
Answer:
Option D) 340
Step-by-step explanation:
We are given the following in the question:
Alpha, α = 0.05
Population standard deviation, σ = $47
Margin of error = 5
95% Confidence Interval:
![\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Cmu%20%5Cpm%20z_%7Bcritical%7D%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
![\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Ctext%7BMargin%20of%20error%7D%20%3D%20z_%7Bcritical%7D%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
Putting the values, we get,
![z_{critical}\text{ at}~\alpha_{0.05} = 1.96](https://tex.z-dn.net/?f=z_%7Bcritical%7D%5Ctext%7B%20at%7D~%5Calpha_%7B0.05%7D%20%3D%201.96)
![5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340](https://tex.z-dn.net/?f=5%20%3D%201.96%28%5Cdfrac%7B47%7D%7B%5Csqrt%7Bn%7D%7D%20%29%5C%5C%5C%5C%5Csqrt%7Bn%7D%20%3D%20%5Cdfrac%7B47%5Ctimes%201.96%7D%7B5%7D%5C%5C%5C%5Cn%20%3D%20339.443776%5C%5C%5CRightarrow%20n%20%5Capprox%20340)
Thus, the correct answer is
Option D) 340