The mean mark for the test was 70% there were 30 students in the class, 20 whom were boys
the mean mark for the boys in the test was 62%
work out the mean mark for the girls

When turned about its axis of rotation, which shape could have created this three-dimensional object?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°