QR IS 23.8! Just subtract 68.4-44.6. The answer is right because 44.6+23.8=68.4
<span>https://www.youtube.com/watch?v=GjYL0-BlejI So, to answer your question yes.</span>
Answer:
b. (2, 5, 3)
Step-by-step explanation:
Trying the offered choices seems the fastest way to find the answer. The second choice works in all equations, hence is the solution.
Another strategy you can use is to see if the equations are dependent. Here, it looks like adding twice the third equation to the other two eliminates at least the x- and y-variables. If that eliminates z, then there are infinite solutions. Instead, it gives the equation ...
7z = 21
z = 3 . . . . . divide by 7
This answer is consistent with choice B, confirming that answer and eliminating the other choices.
So each track practice =3 miles
6miles/3miles= 2
Which gives you an answer of 2 track practices.
