Answer:
1 hour
Step-by-step explanation:
Hello, let's say that her departure trip takes t in minutes, as her return speed is 3 times her departure speed, she took t/3 for the return and we know that this 40 minutes less, so we can write.
t/3=t-40
We can multiply by 3
t = 3t -40*3 = 3t - 120
This is equivalent to
3t -120 = t
We subtract t
2t-120 = 0
2t = 120
We divide by 2
t = 120/2 = 60
So this is 60 minutes = 1 hour.
Thank you.
4 = 2*2
6 = 2*3
9 = 3*3
LCD = 2 * 3* 2 * 3 = 36
so the fractions are 3/4 * 9/9 = 27/36
5/6 = 30/36 and 5/9 = 20/36
Answer:
y=x-3
Step-by-step explanation:
Everytime the x value increases the y value increases by 1
therefore the slope is 1
to solve for the y intercept, or b, plug in a point
(1,-2) for example,
-2= 1*1+b
-2= 1+b
b= -3
therefore y=x-3
Answer:
c-17=3
c=20
Step-by-step explanation:
what grade is this for?
hope this helps
Answer:
<h2>At noon the tide will be at the lowest point which is 1 ft </h2>
Step-by-step explanation:
please see attached a sketch of the solution for your reference
What is a sinusoidal wave?
Alternatively called a sine wave is a type of wave that shows a repetitive pattern or oscillation, it normally starts from a low point moves to the next point which is usually higher than the previous and repeats itself as the whole process continues