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wickedskatboarder
17.10.2019 •
Mathematics
Which is the best approximation for the solution of the system of equations? y=-2/5x+1 y=3x-2
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Ответ:
3x-2=-2x/5+1
3x-2=(-2x+5)/5
15x-10=-2x+5
17x=15
x=15/17, which makes y=-2x/5+1 become:
y=(-2/5)(15/17)+1
y=-6/17+1
y=(-6+17)/17
y=11/17
So the solution to the system is:
(15/17, 11/17)
This is assuming that what you typed for the equations is what you meant...
y=-0.4x+1 and y=3x+2
Ответ:
67°
Step-by-step explanation:
Is JK // HI ? (if not, just omit this answer)
If it is then ∠AHI = ∠AJK
x = 180 - 46 - 67 = 67°