What is the solution to x-y=5 and x+y=3?
1 answer:
Answer:x=4 , y=-1
Step-by-step explanation:
X-y=5
X+y=3
If 1 and 2 are added then y will be eliminated
(1)+(2) gives : 2x=8 then x=4
Now substitute this value of x into either of the 2 equations and solve for y.
Let x=4 in (1) =4-y=5 = y=-2
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Answer:
-16
Step-by-step explanation:
im just taking a guess.
x+4>-12
-4 -4
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4's cancel out and -12+-4=-16
Again this is just a guess.
a polygon with seven sides is called a heptagon
Answer:
<20,23>
Step-by-step explanation:
u= <4,5> and v= <0,-1>
2v = 2*<0,-1> = <0,-2>
5u = 5* <4,5> = <20,25>
2v+5u = <0,-2> + <20,25>
= <20,23>
Answer:
20 tea bags
Step-by-step explanation:
if 5 is 1 gallon then you do 5x4=20
