X < 95
x ∈ ( - ∞; 95)
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Photomath в помощь(есть в App Store и play market)
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Ответ:
0.3A - 20 = 0.35B
0.3B - 8 = 0.2A
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0.2A = 0.3B - 8
A = ( 0.3B - 8 ) : 0.2 = 1.5B - 40
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0.3A - 20 = 0.35B
0.3*( 1.5B - 40) - 20 = 0.35B
0.45B - 12 - 20 = 0.35B
- 0.1B = - 32
B = 320
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A = 1.5B - 40
A = 1.5 * 320 - 40 = 480 - 40 = 440
Ответ: числа 440 и 320
Объяснение:
А) p(x)=x(-x+3);
б) x(-x+3)=0; x1=0; x2=3.
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