The probability of her choosing a green marble is 5/20
I’m not sure about the other part of the question.
Hope this helps you a little bit :)
Answer:
How do you write a perpendicular equation?
Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6. Thus, the equation of the line is y = ½x + 6. Rearranged, it is –x/2 + y = 6.
Step-by-step explanation:
from google can I have brainliest
She work 11 hours for $253. We can find hourly rate by divide 253 by 11 to get 23 dollars per hour
So it’s $23/hour * 17 hours = $391
The answer is A) 2x + 7.
When you are doing synthetic division, you always pull down the first number to the end area like this.
1 ║ 2 9 7
2
After that you multiply it's result by the number in the front. Then you add it's result to the second number. 2 * -1 = -2. So we add -2 to 9 and pull that down.
1 ║ 2 9 7
2 7
Now we repeat that process and multiply the 7 by -1. The result is -7, and we add that to 7.
1 ║ 2 9 7
2 7 0
If the end result is 0, that means the division went in evenly, with no remainders. We can now add an decreasing number of x's to all of the numbers that came through other than 0.
2x + 7
Answer:
b. quadruple the sample size.
Step-by-step explanation:
Given that a 95% confidence is given by (15,20) .
this implies that mean = average of lower and higher bounds of confidence interval =
Margin of error = Upper bound - Mean =
Confidence level = 95%
Critical value = 1.96
Std error =
Std devition = Std error * sqrt n = 6.3775
If we want to reduce margin of error by half we must get margin of error as 1.25
For that std error for same critical value = 0.63775
Std deviation did not change
So sample size only changed which implies that sample size is 4 times the original
b. quadruple the sample size.