If (-5) = x then the anwser should be
-234
Answer:
It takes aditi 5 hours to walk 17 miles.
Step-by-step explanation:
First, find her speed in miles per hour.
1.7 miles in half an hour.
1.7 * 2 = 3.4
3.4 miles per hour.
To find the time, use the distance formula.
Distance = rate * time
17 = 3.4 * time
17/3.4 = time
5 = time
Answer:
a) The formula is given by mean 
the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.
b) 
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
If the distribution for X is normal or if the sample size is large enough we know that the distribution for the sample mean 
is given by:
Part a
The formula is given by mean the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.
Part b
The confidence interval for the mean is given by the following formula:
Answer:432
Step-by-step explanation: 12·3=x
36·12=x
x=432
I'm sorry to hear your stuck! Let''s learn how to do this.
Simplify both sides of the equation!
−25(10−x)=5x+50
(−25)(10)+(−25)(−x)=5x+50 - Distribute
−250+25x=5x+50
25x−250=5x+50
Now subtract 5x to each side.
25x−250−5x=5x+50−5x
20x−250=50
Add 250 to both sides. (We need to get x by itself)
20x−250+250=50+250
20x=300
Divide both sides by 20!
You get x = 15.
I'd take notes and look through on how this problem was solved for future references.
Have a good one!
