Answer:
The tip would be $3.90 and rounded to the nearest dollar would be $4.00
Step-by-step explanation:
Answer:
1,200 kilometers (km)
Step-by-step explanation:
The scale of a map = 1:30000000
There are two cities that are 4 cm apart on the map
<u>
First: Find the distance between them</u>
Distance between them = 4 cm × 30,000,000 = 120,000,000 cm
<u>Second: Convert</u>
120,000,000 cm = 1,200 km
So distance between the cities is 1,200 km
Answer:
Step-by-step explanation:
d = r * t
Let the rate of the boat in still water = x
Let the rate of the stream = y
Against the current
24 = (x - y)* 4 Divide both sides by 4
24/4 = x - y
6 = x - y
With the current
24 = (x + y )* 3 Divide both sides by 3
24/3 = (x + y)
8 = x + y
Put the two equations together
x - y = 6
<u>x + y = 8</u> Add
2x = 14 Divide by 2
2x/2 = 14/2
x = 7
x + y = 8
7 + y = 8
y = 8 - 7
y = 1
The boat is going 7 miles per hour
The stream is going 1 mile per hour.
