Isabel wrote the equation 1/2+1/6=4/6and Jonah wrote 3/6+1/6=4/6 to represent combining the pie pieces. EXPLAIN WHY BOTH EQUATIONS ARE CORRECT ​

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

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?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.