There are 15 blue blue beads on Karsyn's necklace. The ratio of blue beads to red beads is 1:3. How many total beads are on the necklace?

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

Is a triangle with angle measures 46 degree,35 degree and 100 degree possible

The weight of a rock sample is measured to be 2.5 ponds. what is the percent of error in the measurement?