Answer:
11. AW║BY
12. DX║YZ
13. AW║YZ
14. AW║DZ
Step-by-step explanation:
11. If alternate interior angles are congruent, the lines the transversal crosses are parallel.
12. The sum ∠5+∠6 is an alternate interior angle with ∠10. The reasoning of problem 11 applies.
13. If same-side interior angles are suppplementary, the lines the transversal crosses are parallel.
14. Lines perpendicular to the same line are parallel.
To determine the measure of the angle with the cosine value equal to 0.208, we have to use the inverse trigonometric functions. In this number, we have the arccosine which is also written below.
cos⁻¹(0.208) = 77.9948⁰
Therefore, the measure of the angle with cosine equal to 0.208 rounded to the nearest thousandth is <em>77.995⁰</em>.
Step-by-step explanation:
slope= <u>y</u><u>²</u><u>-</u><u>y</u><u>¹</u>
x²-x¹
<u>-12--6</u>
5-2
-12+6
Answer:
Step-by-step explanation:
13. 1.75 14. 2.5 15, 40.5
Answer:
None.
Step-by-step explanation:
For graphs of a system, the 'solutions' are points where the graps intersect each other.
Here, the graphs are parallel, so there are NO intersections = no solutions.
If they intersected at one point, there would be one solution.
If they were really the same line, they would intersect all along the infinite line, so there would be an infinite number of solutions.
In a plane, those are the only three coices for two lines.
