Does someone know the answer? Simplify it
3(2a^2-3a+1)-(2a+7)

3. find the radius of circle p.4. find y.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

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