Answer:
x=27
Step-by-step explanation:
63+90+x=180
63+90=153
180-153= 27
Answer:
Step-by-step explanation:
A regular polygon is a shape with equal sides and angles. Because of this, we can write the following equation to set two sides equal to each other:
Solving, we will get a in terms of b:
Now we can substitute a for (b+3) into our equation:
Therefore, the length of each side of this polygon is 
.
Since the perimeter of the polygon consists of all five sides, the perimeter is:
Both A and C are used within this problem. Distributing happens in the first and second step. Also, Inverse operations are used in nearly every step that is solving.
4.05-2.74=1.31
The difference is 1.31 pounds.
The sides of a real triangle satisfy the <em>triangle inequality</em>, which just says any two sides add up to more than the third. It's strictly more; if two sides add up to exactly the third that's called a <em>degenerate triangle</em>. It's not a real triangle because the vertices are three collinear points.
The triangle equality fails when the sum of the two smallest sides fails to exceed the the largest side.
A. 4+6=10, degenerate triangle, not a real triangle
B. 4+7>7, isosceles triangles are real, SELECT
C. 4+3<10, not a real triangle
D. 4+7=11, degenerate triangle again
