1. a circle has a center at (3,5). the point (3,8) is on the circle. what is the circumference of the to the nearest tenth of a unit?

a. 9.4 units
b. 18.8 units
c. 28.3 units
d. 56.5 units

2. a triangle has a perimeter of exactly 24 units. which of the following could be the vertices of the triangle?

a. (-1 ,3 ), (2,-1), (-1,-1)
b. (6,0), (6,7), (0,7)
c. (-1,-1), (-6,-13), (-9,-9)
,-4) (-3,4), (3,4)

3. a circle has an area of approximately 78.5 square units. if the center of the circle is at (2,4). which of the following points is on the circle?

a. (-6,4)
b. (2,-1)
,-4)
d. (2,-9)

4. the end point of a diameter of a circle are a (2,1) and b (5,5). find the area of the circle in terms of pi.

a. 25/4 pi square units
b. 10 pi square units
c 25 pi square units
d. 5 pi units

Guys i really need or i have to stay late up night

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?