Answer: RA, EJ, JT
Explanation:
When dealing with 3 dimensional figures, you must handle three concepts to analyze the spatial relationship of the lines. Those are:
- Perpendicular lines: it refers to lines that intersect each other at a 90° angle (right angle). This only can happen if the lines.
- Skew lines: it refers to lines that are not parallel but are in different planes and cannot not intersect each other.
- Parallel lines: are lines that are in the same plane but cannot intersect each other.
The given figure is a perfect model to understand what each one of those concepts mean.
Starting by the segment JA, you find that:
- The segments EH, QP, and TR are parallel to segment JA, because you can find a plane formed by JA and any of those segments, and yet JA will never intersect any of them.
- Segment JA is skewed respect segments QT, PR, QE, and PH, because they are in different planes.
- Segment JA is perpendicular to EJ, HA, JT and RA, because JAintersects any of them on a right angle.
Hence, the right choices are segments RA, EJ and JT
Answer:
-1/2(M + 13) = n
Step-by-step explanation:
To make n the independent variable, solve for n using inverse operations.
M + 1 = -2(n + 6)
M + 1 = -2n -12
M + 1 +12 = -2n
M + 13 = -2n
-1/2(M + 13) = n
Answer: f(x) = 7x
See this table
x [ ft^3 of air in the ballon] f(x) [grams that can be lifted]
1 7
2 14
3 21