Answer:
The speed of the boat in still water u = 8
Step-by-step explanation:
Let speed of the boat = u
Speed of the current = v = 4
Given that the first boat to travel 3 miles upstream and back in a total 1 hour.
So
Since v = 4
By solving above equation
u = 8 , - 2
Since u = -2 is not valid.
⇒ u = 8
This is the speed of the boat in still water.
Answer:
Step-by-step explanation:
- V(x) = x³ - 8x² + 19x - 12
<u>The two of the dimensions given</u>
<u>and the third one is</u>
<u>Multiply the three dimensions to get the volume:</u>
- (x - 1)(x - 3)(x + a) =
- (x² - 4x + 3)(x + a) =
- x³ - 4x² + 3x + ax² - 4ax + 3a =
- x³ - (4 - a)x² + (3 - 4a)x + 3a
Comparing with the given function, we get a = - 4
<u>So the missing dimension is:</u>
Question 1
angle 1=angle 3
angle 3=37
therefore angle 1=37
Answer:
b
Step-by-step explanation:
yp
Answer:
Time=2800 seconds.
Time in minutes= 46.67 minutes
Time in hours= 0.778 hours
Step-by-step explanation:
Distance traveled= 70000 m
Rate or speed of travel= 25m/s
To calculate the time for the travel, we multiply the rate of travel by the distance covered or traveled.
Rate= distance/time
Time= distance/rate
Time= 70000/25
Time=2800 seconds.
Time in minutes= 2800/60
Time in minutes= 46.67 minutes
Time in hours = 2800/(60*60)
Time in hours= 2800/360
Time in hours= 0.778 hours