Which ratio cannot form a proportion with 3/4?A.)30/40B.)12/20C.)12/16D.)9/12
2 answers:
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Answer:
C & D
Step-by-step explanation:
x² + 3x - 3 = 0
a = co efficient of x² = 1
b= co efficient of x = 3
c = constant = -3
roots = (-b ± )/2a
= (-3± )/2*1
= (-3±)/2
= (-3±√21)/2