I would just assume <span>a) find the probability that the student guesses EXACTLY 4 correct.
</span>
It would be 3/17 hope this helped and hope it's right
Answer:
1/64, 1/128, 1/256
Step-by-step explanation:
Answer:
The percentage of increase in fuel expenses is 20%
Step-by-step explanation:
Given:
Fuel expense in last year = $800
Fuel expense in this year = $960
To Find:
The percentage of increase
Solution:
Let the percentage increase be X
Then X =![\frac{\text{final value}-\text{starting value}}{\text{starting value}}\times 100](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7Bfinal%20value%7D-%5Ctext%7Bstarting%20value%7D%7D%7B%5Ctext%7Bstarting%20value%7D%7D%5Ctimes%20100)
Now substituting the values we get,
![X =\frac{960-800}{800}\times 100](https://tex.z-dn.net/?f=X%20%3D%5Cfrac%7B960-800%7D%7B800%7D%5Ctimes%20100)
![X =\frac{160{800}\times 100](https://tex.z-dn.net/?f=X%20%3D%5Cfrac%7B160%7B800%7D%5Ctimes%20100)
![X =0.2 \times 100](https://tex.z-dn.net/?f=X%20%3D0.2%20%5Ctimes%20100)
X= 20%
Answer:
x = 9/8
Step-by-step explanation:
The triangles are similar so we can use ratios to solve
AB BC
---- = -----------
AD ED
x 1
---- = -----------
x+9 9
Using cross products
9*x = 1(x+9)
9x = x+9
Subtract x from each side
9x-x = x+9-x
8x = 9
Divide by 8
8x/8 = 9/8
x = 9/8