Three members d, m,n are in the ratio 3:6:4.find the value of 4m-m over m+2n​

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

Abcd is a parallelogram find the valuse of x

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap