Tickets for a carnival cost $8 for children age 12 and under and $12 for anyone over 12 years of age. The carnival sold a total of 233 tickets and collected $2,156. How many children’s tickets were sold?

Describe all the numbers that when rounded to the nearest thousand are 645,000

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

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?