Sure, here is how I broke it down. The bird is flying a constant X miles per hour with a wind speed of Y miles per hour. So, there are two equations that you use to solve. Here they are:
X+Y=12
X-Y=4
Now, you have to use substitution or elimination to solve (I will use elimination). To use elimination, you simply add both equations together to get:
2X=16
Solve for X by dividing by 2.
X=8. We already established that X is the speed of the bird. Plug X back into either of the equations to find the windspeed.
(8)+Y=12
Subtract 8 from both sides.
Y=4. We already established that Y is the windspeed.
So, the speed of the bird (X) is 8mph and the speed of the wind (Y) is 4mph.
Hope this helped!!
Answer:
D
Step-by-step explanation:
The answer to this problem should be the 4th one.
All real numbers can't be right as 0 obviously wont work. However, it is important to remember that sqrt of a number cant be negative, so x must either be greater than or equal to -1 and 1
-21 + 3n = -18 + 2 -6 = -22 . I believe this is right. I hope I made sense, and just pls correct me if I’m wrong!
The answer is 10
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Answer:
Eric's weekly salary is $680.77
Step-by-step explanation:
$35,400 divided by the number of weeks in a year, Which is 52. 52/35,400=680.77