Solve using Substitution
y = -1x - 5
4x - 8y = 4

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Find the amplitude of a sinusoidal function that models this temperature variation

Someone this is due ! > .< create an equation that can be used to find the value of x? hint: what type of angle pair do you see? here are the questions to answer, after you create an equation: 1) what should be the total amount used for this type of angle pair? explain how you know. 2) what is the answer to your equation for "x"? 3) after you find your answer for "x" in your equation, find the degree measurement for angle aed?