Evaluate \dfrac13m-1-\dfrac12n 3 1 m−1− 2 1 nstart fraction, 1, divided by, 3, end fraction, m, minus, 1, minus, start fraction, 1, divided by, 2, end fraction, n when m=21m=21m, equals, 21 and n=12n=12n, equals, 12.

Step-by-step explanation:

Given the following expression:

You know that the value of "m" is:

And the value of "n" is:

Knowing these values, you must substitute them into the given expression:

So, in order to evaluate, the first step is to solve the multiplications and then you must reduce the fractions. Then:

Now, you must solve the subtraction.

You get that the difference (which is the result of the subtraction) is the following:

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5

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