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3 years ago

9

A set of cards includes 20 yellow cards, and 24 blue cards. What is the probability, written in decimal form, that a blue card i

s chosen at random? (Help please)

2 answers:

Papessa [141]3 years ago

5 0

.54 I believe.
20 yellow and 24 blue = 44 cards in all
divide 24 by 44 and you get a .54 repeating decimal.

sladkih [1.3K]3 years ago

3 0

0.55
Number of favorable outcome/Total number of possible outcome
24/(20+24)

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Answer:

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Step by step explanation:

$\text{Given that,}\\\\~~~~~~\sin A = \dfrac 38 \\\\\implies \sin^2 A = \dfrac 9{64}\\\\\implies 1 - \cos^2 A = \dfrac{9}{64}\\\\\implies \cos ^2 A = 1 - \dfrac 9{64}\\\\\implies \cos^2 A = \dfrac{55}{64}\\\\\implies \cos A =\pm\sqrt{\dfrac{55}{64}}\\ \\\implies \cos A = \pm\dfrac{\sqrt{55}}8\\\\$

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Step-by-step explanation:

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