The table shows the advertised prices of different quantities of action figures at several toy stores.

Janets dinner costs 7.50. if she wants to leave a 10% tip how mich extra should she leave

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?

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315