Brody is making a necklace, bracelet and anklet out of beads. she has green, blue, purple and silver beads. how many different pieces of jewelry can she make if she only uses one color of beads for each

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities