Commutative because your switching the order
Answer:
Angle A: 30°
Angle B: 60°
Angle C: 90°
Step-by-step explanation:
Hopefully this helps! :)
Answer:
a) lower limit = 4.295 minutes
b) upper limit = 6.365 minutes
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 5.33 minutes
Standard deviation r = 1.33 minutes
Number of samples n = 11
Confidence interval = 99%
z(at 99% confidence) = 2.58
Substituting the values we have;
5.33+/-2.58(1.33/√11)
5.33+/-2.58(0.401010088288)
5.33+/-1.0346060277
5.33+/-1.035
= ( 4.295, 6.365) minutes
Therefore at 99% confidence interval (lower, upper limit) = ( 4.295, 6.365) minutes
a) lower limit = 4.295 minutes
b) upper limit = 6.365 minutes
First, convert the 20% to a real mathematical number. For percents, this is always done by dividing the 20% by 100%, or 20% / 100% = 0.200.
Second, find out what 20% of $600.25 is. This is the amount of the sale discount. This is always found by mulitplying 0.200 by the item's cost $600.25, like this:
0.200 x $600.25 = $120.05.
So for this sale, you'll save $120.05 on this item.
This means, the cost of the item to you is
$600.25 - $120.05 = $480.20.
Alternatively, you can think about it this way. The item is 20% off. This means you'll pay 80.000% of the total cost (100% - 20% = 80.000%).
Now what's 80.000% of the total cost?
0.800 x $600.25 = $480.20.
Just like the result above, the sale price on the item is $480.20.
Hope this helps you on your assignment! :)
