A company manufactures rivets. The shear strength of the rivets varies Normally with a mean of 800 pounds and a standard deviation of 50 pounds. a. Draw a normal curve for this information, going out 3 standard deviations on each side of the mean and labeling the points. b. Approximately what percentage of rivets have a shear strength between 750 and 850 pounds

the range is 19

step-by-step explanation:

the range is biggest number minus the smallest, so in this case it would be

41 - 22 = 19

10000

step-by-step explanation: divide by 2,

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5