Answer:
An equation like 2x + 3 = 7 is a simple type called a linear equation in one ... There are other types of equations, however, that can have several solutions. ... to solve an equation algebraically and you end up with an obvious identity (like 3 = 3)
Step-by-step explanation:
Answer:
CNBD
Step-by-step explanation:
From the diagram, we can see that:

Then by Alternate Interior Angles:

From vertical angles, we also know that:

This is all we can gather from the given image. Knowing only three pairs of angles cannot prove congruence, as proving congruence requires at least one side.
Congruence cannot be determined.
Answer:
-10
Step-by-step explanation:
- x + = -
-5 x 2 = -10
I assume you mean divide using the conjugate to rationalize the denominator and express the result in standard rectangular form.

Answer:
Part a): 100 degrees
Part b): Isosceles Triangle
Step-by-step explanation:
Part a): Since the angle measures of all triangles add up to 180 degrees and since the other two angles are 40 degrees, which add up to 80, we can use subtraction to find the answer.
180 - 80 = 100
Part b): Since only two of the three angles in this triangle have the same measure, we can find that it is an isosceles triangle, with base angles measuring 40 degrees, and the vertex angle being 100 degrees.