The surface area of a square pyramid is 189 in.². the side length of the base is 7 inches. what is the value of x?

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

What kind of bond pays interest which is exempt from tax?