Write the line equation for the line passing through the points (8, 3) and (12, -1).
1 answer:
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Answer:
The expression x-0.3x represents the total cost of Minecraft Dungeons.
Step-by-step explanation:
Given that:
Percentage of Minecraft sale = 30% off
Cost of Minecraft Dungeons = x
Amount of discount on Minecraft Dungeons = 30% of x
Amount of discount =
Amount of discount = 0.3x
Total cost of Minecraft Dungeons = Total cost - Discount
Total cost of Minecraft Dungeons = x - 0.3x
Hence,
The expression x-0.3x represents the total cost of Minecraft Dungeons.
Try this solution:
Answer: 6 & 4.5 (m-per-h)
Step-by-step explanation:
- The basic formula used in this task is S=V*t, where S - distance, V - speed, t - time.
- the downstream speed is: V+Vc, where V - the speed of the boat in still water, Vc - the speed of the current.
- the upstream speed is: V-Vc.
- according to the described above the distance for downstream is S1=(V+Vc)*t1, where t1=10; the distance for upstream is S2=(V-Vc)*t2, where t2=70.
- for whole travel down- and upstream: S=S1+S2.
- Using these it is possible to make up the system of the equations:
V - the speed of the boat in still water - 6 miles per hour, Vc - the speed of the current - 4.5 miles per hour. All the details for the system of the equations are in the attachment.
