The mean mark of 30 students in class A is 55 and 25 students of class B is 44 find the mean score of
all the students

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?