4/9n ÷ 1/15n w/explanation and step by step

-20n/3n

Step-by-step explanation:

-4       1

---   /    ---

9n       15n

Keep, change, flip

- Keep the -4/9n

- Change the division sign to a multiplication sign

- Flip the 1/15n to 15n/1

-4       15n

---   *    ---

9n       1

Cross simplify.

9n divided by 3 is 3n.

15n divided by 3 is 5n.

-4       5n

---   *    ---

3n       1

-4 times 5n equals -20n

3n times 1 equals 3n

-20n      

---  

3n

answer: plz put a pic in so i can answer it

step-by-step explanation:

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