Cedarburg's zoo has two elephants. The male elephant weighs 3 3/4 tons and the female elephant weighs 7/12 of a ton. How much more does the male weigh than the female?

Can someone explain to me how to do

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7