Eleven members of the middle school math club each paid the same amount for a guest speaker to talk about a problem solving math meeting . they paid their guest $1a2 .what is the missing digit a of this 3-digit number

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 is the distance between the points (2 -3) and (-6 4) on the coordinate plane

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.