Help I cant do ittt
need done ASAP

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

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.

The area of the rectangle shown is 2x^2-x-15 square units. what is the width of the rectangle?