78 students are going to be divided into 24 groups and the number of each group member will be either 4 or 2. How many groups of 2 will there be? Let x be the number of groups of 2 and let y be the number of groups of 4

how does reflection change the orientation of a figure

If a quantity increases by 25% and then decreases by 25%, were the results of the original quantity explain

Which type of isometry is the equivalent of two reflections across intersecting lines? A. glide reflection B. rotation C. reflection D. none of these

Kyle started biking at a constant rate of 15 mph. Half an hour later, Kim followed on the same path at a constant rate of 18 mph. For how long was Kim biking, before she caught up to Kyle?

Mrs. Wing spent 2 3/4 hours replacing zippers. If it takes her 1/4 hour to do one, how many zippers did she replace?

What happens when blue sounds like thunder, but thunder tastes like red?

A cone has a diameter of 18 units and height of 8 units. What is its volume? 72π cubic units 216π cubic units 648π cubic units 864π cubic units

Samantha and Luis are attempting to determine how many library books each seventh grade student checks out at the same time. Samantha surveys every other seventh grade student leaving the library. She samples a total of 40 of the 200 seventh graders.

What is the formula for a finite geometric series?

what is the future value at the end of 5 years of $400 loan that charges simple interest at an annual rate of 2%