Four girls and eight boys are running for president or vice president of the student council. find each probability: find the prbability that two girls are elected

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte