3. Which of the following would be a simple random sample?
A. Choosing all residents in a single randomly chosen block B. Putting one number in a hat for each participant and then drawing one number C. Separating boys and girls into two groups and then choosing one from each group
D. Sending questionnaires and waiting for responses

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

What is the measure of sty in oo below? 130 310 230 50

Which two fractions are equivalent to 24/84? 6/42 and 2/7 6/21 and 2/6 12/42 and 3/7 12/42 and 2/7