Questions 8 and 10 refers to the circle below. the circle represents the 7m
O
7m

8.The circle above has a radius of 7cm. What is the area of the circle?
a. 43.96m2 b. 49m2
c. 21.98m2 d. 153.86m2

9.What is the area of the minor sector?
a. 38.47m b. 38.47m2
c. 45 m2 d. 45m3

10. What is the circumference of circle?
a. 43.96m b. 49m
c. 21.98m d. 153.86m

What is the rescursive formula for this geometric sequence? 7, -14, 28, -56

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 104 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 105 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%