Answer:
#4
Let M is the midpoint of DE.
Since D is at 8 and DE = 5.
DM = ME = 5/2 = 2.5
Point M is at:
- 8 + 2.5 = 10.5 if E is to the right of D
- 8 - 2.5 = 5.5 if E is to the left of D
#5
Given
- XY = 7,
- YZ = 2x - 1,
- XZ = 30
Since XZ = XY + YZ, set up an equation and solve for x:
- 7 + (2x - 1) = 30
- 2x + 6 = 30
- 2x = 24
- x = 12
#6
The distance from your house to friend's is LN.
We have:
- M is midpoint of LN, so LM = MN
- LM = 3x
- MN = 2x + 2
Set up an equation, solve for x:
- 3x = 2x + 2
- 3x - 2x = 2
- x = 2
Find the distance LM:
Find the distance LN: