Which set of side lengths forms a right triangle 2,3,13 4,6,10 9,12,18 15,36,39

Is 0.144 squared rational or irrational

A stationary observer notices that the average wave speed for a group of waves is 4 m/s. If the distance between each crest is 0.02 km, how long does it take for each wave crest to pass the observer?

837 plus equals 2000 in math

Should I skip school On Friday on Labor day weekend to go visit my cousin in Georgia? I think I should but I need other peoples opinion.

Drag each interval to a box to show if the function shown is increasing, decreasing, or neither over that interval.

What is 63 7/8-55 34

What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m? Round the answer to the nearest tenth.

Assume that there are 12 students in the class, the front row has eight chairs, and the tutor, who is also a member of the class, must be seated next to Louise. How many different ways can we seat students in the first row?

163,160,157, ... find the 42nd term

A string of kite 100 meters long and it makes an angle of 60 degrees with horizontal. If the person is holding the string 0.8 m from the ground, find the height of kite from the ground