Final answer:
To solve for y in the angle expressions (11y-13) and (18y-13), we assume they sum to 180 degrees, leading to y being approximately 7.1. Substituting y back gives angles of approximately 65.1 degrees and 114.9 degrees.
Step-by-step explanation:
The student appears to be asking for help with an algebraic problem involving angles, specifically to solve for the variable y in the expressions (11y−13)° and (18y−13)°. However, the question lacks context as to how these two expressions are related. Are they supplementary angles, complementary, or part of a geometric shape? Assuming they are supplementary and sum up to 180° because that's a common context in which two angles are related, we can set up an equation:
11y - 13 + 18y - 13 = 180
29y - 26 = 180
Add 26 to both sides of the equation, then divide by 29:
y = (180 + 26) / 29
y ≈ 7.1
We can now replace y back into the original expressions to find the actual angles:
(11×7.1−13)° ≈ 65.1°
(18×7.1−13)° ≈ 114.9°