Answer:
Surface Area = 157 in^2
Step-by-step explanation:
Surface area is the area of each side added together.
Front = Trapezoid = <u>b1 + b2</u> * h <u> 5 + 9 </u> * 5 = 27.5
2 2
Back = Trapezoid = <u>b1 + b2</u> * h <u> 5 + 9 </u> * 5 = 27.5 27.5
2 2 27.5
Right = Rectangle = l * w 6.4 * 5 = 32 32
Left = Rectangle = l * w 5 * 5 = 25 25
Bottom = Rectangle = l * w 9 * 5 = 45 45
Top = Rectangle = l * w 5 * 5 = 25 <u> 25 </u>
157 in^2
It is now possible to find the margin of error, the reason being that the confidence level is not given. However the 'standard error' of the sample mean can be found as follows:
Converted to a percentage, we get 1.11% which is the third choice of answer.
Answer:
the answer is C
Step-by-step explanation:
Answer:
Undefined.
Step-by-step explanation:
Comment
Let's begin by discussing why a calculator throws up and gives an error when Tan(pi/2) is entered.
Start by entering Tan(89) which is 1 degree from pi/2. The calculator is very well behaved when you do that, but look at how big Tan(89) is. 57.29. That's pretty big as these things go.
I was taught that the answer to Tan(pi/2) was infinity which I think is no longer in vogue. I think you should be answering Undefined.
