The ratio of boys to girls in a group is 7:3. If there are 40 more boys than girls, work out how many people there are in total.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

True or false? a circle could be circumscribed about the quadrilateral below.

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is