2x + 4y = 14
4x + y = 20......multiply by -4
----------------
2x + 4y = 14
-16x - 4y = -80 (result of multiplying by -4)
---------------add
-14x = -66....as u can see, ur y's cancel out
so ur answer is : 1st answer choice <==
** and just so u know, u could have multiplied the 1st equation by -2, and it would have cancelled out ur x's
Bryan : 5/6 = 20/24
Brother : 3/4 = 18/24
Answer Bryan ate more
Answer:
Let 
Solution: 
Step-by-step explanation:
See attached for step-by-step
Answer:
5050
Step-by-step explanation:
S=n*(n+1) / 2
S=100 * (100+1) /2 = 50 * 101 = 5050
Answer:
6.4
Step-by-step explanation:
This is because 20% of 32 is 6.4.
