Answer:
- Railway lines are example of parallel lines
- The floor and the walls of a room are example of perpendicular lines
- Two roads crossing at a signal can be termed as example of intersecting lines
Step-by-step explanation:
The lines can be related in following three ways
- Lines can be parallel
- Lines can be perpendicular
- Lines can be intersecting at an angle other than 90.
Now three real life examples of above three scenarios are described below:
- Railway lines are example of parallel lines
- The floor and the walls of a room are example of perpendicular lines
- Two roads crossing at a signal can be termed as example of intersecting lines
49 increased by d is 49 + d but I feel that this isn't the whole statement...?
Answer:
∠ CBD = 63°
Step-by-step explanation:
∠ ABC + ∠ CBD = ∠ ABD, substitute values
7x - 9 + 6x + 27 = 96, that is
13x + 18 = 96 ( subtract 18 from both sides )
13x = 78 ( divide both sides by 13 )
x = 6
Thus
∠ CBD = 6x + 27 = 6(6) + 27 = 36 + 27 = 63°
Answer: 27 rows contain 25 vines.
Step-by-step explanation:
Let x represent the number of rows that contain 20 vines.
Let y represent the number of rows that contain 25 vines.
Sarah plants 760 vines in rows containing either 20 vines or 25 vines. This means that
20x + 25y = 760- - - - - - - - - - -1
There are 3 times as many rows containing 25 vines as there are rows containing 20 vines. This means that
y = 3x
Substituting y = 3x into equation 1, it becomes
20x + 25 × 3x = 760
20x + 75x = 760
95x = 760
x = 760/95
x = 9
y = 3x = 3 × 9
y = 27
Answer:
Step-by-step explanation:
a. 2x + 36
2. 6a + 15b
3. 35x + 15y
4. 3p + 2q
5. 3a + 8