Answer:
12 km
Step-by-step explanation:
Let
x km/h = speed of the canoe on the lake
y km/h = speed of the current
<u>With the current:</u>
Speed = x + y km/h
Distance = 30 km
Time = 3 hours 20 minutes = 
hours
Thus,
<u>Against the current:</u>
Speed = x - y km/h
Distance = 28 km
Time = 4 hours
Thus,
Add these two equations:
<u>On the lake:</u>
Time = 1.5 hours
Speed = 8 km/h
Distance 
Hey there!
First, we want to put the equation of this first line in slope-intercept form.
5y=x-5
We divide both sides by 5.
y=1/5x-1.
The slope of a perpendicular is line is the negative reciprocal of the slope of the original line. The slope of a line perpendicular to a line with the equation y=1/2x would be -2, because you flip the numerator and denominator and then make it negative.
So, this means that the slope of the line perpendicular to the line y=1/5x-1 is -5. So, here's our equation so far.
y= -5x+b
Now, we need to find the b. To do this, we can plug in this point (-1,0) that this perpendicular line goes through and solve for b.
0=-5(-1)+b
0=5+b
b= -5
So, this gives us the equation y= -5x-5
Have a wonderful day!
Answer:
8
Step-by-step explanation:
Answer:
the answer is b because it is asking to help you find one to help the inequality
Answer:
Step-by-step explanation:
Note that the expression is the difference of squares.
36 - 9m² = 6² - (3m)²
6² - (3m)² = (6 + 3m) (6 - 3m)
