Numbers fall into several broad categories: natural numbers, integers, rational numbers, irrational numbers, and even complex numbers. How many of these categories are you familiar with? Why is it important to have categories of numbers and to know which categories you are dealing with in a given expression? One category that is important to understand is rational numbers. A rational number is a number that can be expressed as an integer divided by another integer. In this unit you will encounter rational expressions, which are a form of polynomial. Knowing what the definition of rational numbers is, what form do you expect rational expressions to take?

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question

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

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step-by-step explanation: