Math Problem Statement
Solution
Let's analyze the image and solve the problem step by step.
Given:
- The diagram shows angles and .
- and form a straight line, so their sum should be .
Step 1: Set up the equation
Since , we can write:
Step 2: Simplify the equation
Combine like terms:
Step 3: Solve for
Add 21 to both sides of the equation: Now, divide by 5:
Step 4: Verify the equation given
From the multiple choices shown:
The equation we derived does not exactly match any of these provided choices, so it seems there might be a mix-up. However, based on the logical derivation of using the correct relationship of the angles, our calculated value should be used.
Final Answer:
The correct value for is approximately 40.2.
Do you want further details or have any questions? Here are some related questions you might find useful:
- How do you determine if angles form a straight line?
- What are the steps to combine like terms in an equation?
- Why do we add 21 to both sides of the equation in this problem?
- What are the steps to isolate in an equation?
- How do you verify that your solution for is correct?
Tip: Always double-check the equation you are working with to ensure it matches the scenario described in the problem.
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Math Problem Analysis
Mathematical Concepts
Algebra
Geometry
Linear Equations
Formulas
Sum of angles on a straight line = 180°
Theorems
Linear Pair Theorem
Suitable Grade Level
Grades 7-9