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meriva
3 years ago
8

Solve (x + 1 < 4) ∩ (x - 8 > -7).

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0
When solved 
(x + 1 < 4) ∩ (x - 8 > -7) 
becomes:
(x+1-1 < 4-1) ∩ (x - 8 +8 >  -7+8 ) 
(x < 3) ∩ (x > 1).
and if you change places it will become even more obvious:
 ( 1<x ) ∩ ( x < 3 )
meaning:  x is set of all numbers greater than 1 and less than 3 or otherwise: 
{x | 1 < x < 3}
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set to zero and solve

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divide -4
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ying
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zint
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zint is (0,0,-12)




xint is (-15,0,0)
yint is (0,10,0)
zint is (0,0,-12)
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