Answer:
Step-by-step explanation:
Equate the two opposite Angles
7x - 31 = 5x + 13 Subtract 5x from both sides
7x - 5x - 31 = 13 Combine
2x - 31 = 13 Add 31 to both sides
2x = 13 + 31 Combine the right
2x = 44 Divide by 2
x = 44/2
x = 22
Answer:
A. parallel
Step-by-step explanation:
when the slopes are the same it's parallel
when slopes are multiplied and they equal -1 it's perpendicular
Skew lines are lines that are not parallel and do not intersect.
BD, AB, FH, EF intersect BF. They are not skew to BF.
DH, CG, AE are parallel to BF. They are not skew to BF.
CD, AC, GH, EG are neither parallel nor do they intersect BF, so they are skew to BF
Answer: x=2 and y=−1
Step-by-step explanation:
5x+7y=3for x:
5x+7y=3
5x+7y+−7y=3+−7y(Add -7y to both sides)
5x=−7y+3
x=
−7/
5
y+
3
/5
Substitute
−7
/5
y+
3
/5 for x in2x+3y=1:
2(
−7/
5
y+
3
/5
)+3y=1
1
/5
y+
6
/5
=1(Simplify both sides of the equation)
1
/5
y=
−1
/5
y=1
Substitute −1 for y in x
−7
/5
y+
3
/5
:
x=
x=2
x=2(Simplify both sides of the equation)
Answer:
130°
Step-by-step explanation:
The diagram for the question is redrawn on the attached image. It was obtained online.
Basically, what the question is asking is for the angle between the new path of the beam and the old path if the beam continued without being reflected by the mirror.
The line of the old path of the beam of light is a straight line. And the sum of angles on straight line = 180°
25° + 25° + y° = 180°
y = 180° - 50° = 130°
