<h3>I'll teach you how to factor 4x^2 + 36X + 81</h3>
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4x^2 + 36X + 81
Rewrite 4x^2 + 36X + 81 as...
(2x)^2+2*2x*9+9^2
Apply perfect square formula:
(2x+9)^2
Your Answer Is (2x+9)^2
plz mark me as brainliest :)
<span>R={(r;s) | r,s ε (-∞,∞) : r=s/10}</span>
#25
210 / 0.42 = 500
answer: 500 people were surveyed
#18
22.50 x 1.15 = 25.875
answer: $25.88 (third choice)
#19
550 x 0.07 = $38.50
answer: $38.50 (third choice)
#20
$160 x 0.4 = $64
answer: $64 (third choice)
7(15\3-2) because GEMDAS OR PEMDAS