They are mad as easy try it on your own your answer is suppose to be 80
Answer:
2/3
Step-by-step explanation:
In the 5-minute interval between 7:00 and 7:05, a train to B is the first to arrive. In the 10-minute interval between 7:05 and 7:15, a train to A is the first to arrive. That is, in any 15-minute interval, the probability is 10/15 = 2/3 that a train to A is the first to arrive.
The 1-hour interval between 7 A.M. and 8 A.M. is an integer number of such intervals, so ...
2/3 of the time, he or she will go to destination A.
Answer:
Yes.
Step-by-step explanation:
3/3 is equal to 1. If you add 3/3 to 2/3, you get 5/3, which means that yes, they are equivalent.
<h3>
Answer: 6 hours</h3>
Work Shown:
(90 lawns)/(45 hours) = (12 lawns)/(x hours)
90/45 = 12/x
2 = 12/x
2x = 12
x = 12/2
x = 6
It takes 6 hours to mow 12 lawns.
I will give two solutions, one where everything is cubed and one where just the 3 is cubed, because I don't know what you meant.
Just the 3 is cubed solution(Which I think is correct because it has a nicer answer):
Answer:
Step-by-step explanation:
We have that 
.
We can subtract 
from both sides of the equation to get 
.
We can then divide by 
to get 
.
So, 
and we're done!
Everything is cubed solution:
Answer:
![\sqrt[3]{5}-3/2](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B5%7D-3%2F2)
Step-by-step explanation:
We have that 
.
We can take the cube root of both sides to get ![2x+3=\sqrt[3]{40}](https://tex.z-dn.net/?f=2x%2B3%3D%5Csqrt%5B3%5D%7B40%7D)
.
Note that 
, so ![\sqrt[3]{40}=\sqrt[3]{2^3*5}=2\sqrt[3]{5}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B40%7D%3D%5Csqrt%5B3%5D%7B2%5E3%2A5%7D%3D2%5Csqrt%5B3%5D%7B5%7D)
.
So, we want to solve ![2x+3=2\sqrt[3]{5}](https://tex.z-dn.net/?f=2x%2B3%3D2%5Csqrt%5B3%5D%7B5%7D)
.
We can subtract 
from both sides to get ![2x=2\sqrt[3]{5}-3](https://tex.z-dn.net/?f=2x%3D2%5Csqrt%5B3%5D%7B5%7D-3)
.
We can then divide both sides by to get ![x=\sqrt[3]{5}-3/2](https://tex.z-dn.net/?f=x%3D%5Csqrt%5B3%5D%7B5%7D-3%2F2)
.
So, ![\boxed{x=\sqrt[3]{5}-3/2}](https://tex.z-dn.net/?f=%5Cboxed%7Bx%3D%5Csqrt%5B3%5D%7B5%7D-3%2F2%7D)
and we're done!
