in a 7th grade class. There are 4 boys for every 5 girls, How many girls are in the class if there are 20 boys in the class

The product of two negative rational numbers is always zero sometimes zero never zero

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.