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soldi70 [24.7K]

2 years ago

14

The selling price of an item is $650. It is marked down by 20%, but this sale price is still marked up from the cost of $400. Fi

nd the markup from cost to sale price

1 answer:

nexus9112 [7]2 years ago

8 0

Answer: 10%×$650=$585

$585-$450=$135 Mark up.

HOPE THIS HELPS

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Step-by-step explanation:

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$P(X\leq4)=P(x=0)+P(x=1)+P(x=2)+P(x=3)+P(x=4)\\\\=^{15}C_{0}\ (0.30)^0(0.70)^{15}+^{15}C_{1}\ (0.30)^1(0.70)^{14}+^{15}C_{2}\ (0.30)^2(0.70)^{13}+^{15}C_{3}\ (0.30)^3(0.70)^{12}+^{15}C_{4}\ (0.30)^4(0.70)^{11}\\\\=(0.30)^0(0.70)^{15}+15(0.30)^1(0.70)^{14}+105(0.30)^2(0.70)^{13}+455(0.30)^3(0.70)^{12}+1365(0.30)^4(0.70)^{11}\\\\=0.515491059227\approx0.5$

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3 years ago