Answer: alternative C.
Step-by-step explanation: The samples chosen in surveys are often representative when taking the whole population in consideration. They <u>have to be chosen in a random way so they are representative and there's no bias playing a role in the results</u>. Therefore, the variance calculated on the samples are good estimations of the population variancies, since they represent the population in the best way possible.
Answer:
4/5 because you have to multiply the denominator by 20 and the numerator by 20 so then you will get your answer 80/100
Step-by-step explanation:
Visualize the kite as a triangle, with the point where the kite is anchored being 'A', the kite being 'B', and the point directly below the kite being 'C'. We know that line segment BC is 19 meters, and can use trigonometry to find the length of the string, line segment AB. The operator 'sin' can be calculated by dividing the opposite leg over the hypotenuse, so given the angle 'A', we can solve for the hypotenuse.

. If we solve for 'x', we get

. Plug 19 over sin(33) into your calculator and you get 34.885, so the answer is A, 35 feet
= A/x +B/(x -3) +C/(x +8) +D/(x +8)^2 . . . . . where A, B, C, D are constants.