That's what I got. to rationalize the numerator you have to multiply by the conjugate, in this case (√3 + 9) / (√3 + 9), which is what it looks like you did.
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Answer:
12 groups of 1/4
Step-by-step explanation:
Look up the tape diagram part
$500
x*.8=400
divide .8 from both sides
x=500
