To find this answer, we need to multiply 3.57 by 12.

Therefore, 12 planks will cost $42.84.
Is there a screenshot that shows the question? It’s impossible to solve this problem without no numbers or any other information…
Answer:
x = 63°
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Geometry</u>
- All angles in a triangle add up to 180°
Step-by-step explanation:
<u>Step 1: Set up equation</u>
x + 94° + 23° = 180°
<u>Step 2: Solve for </u><em><u>x</u></em>
- Combine like terms: x + 117° = 180°
- Subtract 117° on both sides: x = 63°
It is -4/9 because the slope is the same when lines are parallel. The y is what is different in the equation