Hel find the area of a rectangle that has a length of x+3 and a width of 2x-7

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false

Find percent notation for 0.008 0.008=

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?