pls lydia is a songwriter who collects royalties on her songs whenever they are played in a commercial or a movie. lydia will earn $20 every time one of her songs is played in a commercial and she will earn $70 every time one of her songs is played in a movie. lydia earned a total of $510 in royalties on 13 commercials and movies. write a system of equations that could be used to determine the number of commercials and the number of movies on which lydia's songs were played. define the variables that you use to write the system.

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

mathpapa

step-by-step explanation:

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

a. true

if you are using power tools in or around standing water, you should continue and always proceed with caution.