The answer is B, you’re welcome
Since the others are congruent and linear so is a and b!!!!!!!!
In the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.
<h3>What is the triangle?</h3>
The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.
In the first diagram:
The sum of the 5k + 20 and 7k + 40 is 180
5k + 20 + 7k + 40 = 180
12k + 60 = 180
12k = 180 -60
12k = 120
k = 10
In the second diagram:
The sum of the two interior angles is equal to the exterior angle.
40 + 12k + 10 = 8k + 80
4k = 30
k = 30/4 = 15/2
Thus, in the first diagram the value of k is 10 and in the second diagram the value of k is 15/2.
Learn more about the triangle here:
brainly.com/question/25813512
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Answer:
9
Step-by-step explanation:
The equation is
9x + 1.50 = 82.50
You must isolate the 9x , to do so you have to subtract 1.50 from both sides.
9x + 1.50 = 82.50
-1.50 -1.50
9x = 81
isolate the variable (x), to do so you have to divide both sides by 9
9x = 81
/9 /9
=
x = 9
