Which set of side lengths form a right triangle? A. 3 ft. , 6ft , 5ft .

B. 8 cm , 17 cm , 14 cm .

C. 50 inches , 48 inches , 14 inches .

D. 53 m , 48 m , 24 m .

Please help me , I'm stuck on a quiz . ​

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.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.