Answer:

Step-by-step explanation:
The system is
5x-y=-1
-5x+3y=25
We the two equations to get:

We simplify t get

We divide both sides by 2 to get:

We now substitute y=12 in to the top equation to get:



Answer:
Step-by-step explanation:
the value 0.6 is greater than 0.39 bc 0.6 is a bigger value than 0.39 as u go down the values get more bigger and as u go up the values get more smaller.
Hope this helps!
It should be acute because if A and B are complementary then B and A added together should be 90 so 90-30=60 and 60 would be an acute angle
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