julio places gray chairs and blue chairs in each row he sets up for the assembly. The ratio of gray chairs to blue chairs in each row is 7 to 3. How many gray chairs and blue chairs will Julio use if he sets up a total of 80 chairs? Show your work.

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

the solution is 12x-6y

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc