2.6k views
5 votes
What is the value of x? And what is the missing angle value?

What is the value of x? And what is the missing angle value?-example-1
User VinnyG
by
7.5k points

2 Answers

1 vote
Work shown above! x = 10 and the missing angle is 70°! Hope this helped c:
What is the value of x? And what is the missing angle value?-example-1
User Pasx
by
7.5k points
3 votes
These angles, 110º and 7xº, are examples of supplementary angles.
Supplementary angles are angles that, when added together, produce a sum of 180º.
This means 110º + 7xº = 180º.

With this equation, 110º + 7xº = 180º, we can isolate the variable and solve for x to answer this question.

110º + 7xº = 180º
The first step to solve for x is to subtract 110º from both sides of the equation.
110º + 7xº - 110º = 7xº
180º - 110º = 70º

7xº = 70º
Since we want 1xº instead of 7xº, we need to divide both sides by 7.
7xº / 7 = xº
70º / 7 = 10º

xº = 10º
Now we have our solution!
The value of x is 10º.

Let's check this to be sure.
7xº, when added to 110º, must equal 180º since 7xº and 110º are supplementary angles.
7xº + 110º = 180º
We found that x is 10º.
7(10)º + 110º = 180º
7 • 10 = 70
70º + 110º = 180º
180º = 180º
This works! That means that x = 10º is in fact the correct answer.

Answer:
x = 10º

Hope this helps!
User Yasin Br
by
7.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.