The American Red Cross spent $185,048,179 for administrative expenses. This amount

1 answer:

6 0

Answer:

Step-by-step explanation:

so 3.16% of the total revenue is 185,048,179

let x be the total revenue...and turn ur percent to a decimal..." of " means multiply and " is " means equals

0.0316 * x = 185,048,179

0.0316x = 185,048,179....divide both sides by 0.0316

x = 185,048,179 / 0.0316

x = 5,855,955,031.65 rounded to the nearest hundred million =

5,900,000,000 <===

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grin007 [14]

Answer

1.50 cents for 5% sales tax on 30 dollars

Step-by-step explanation:

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morpeh [17]

The predictive value of a positive test is is 0.43.

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This question is solved using the concepts of sensitivity and specificity.

Sensitivity: It is the true negative rate, that is, the proportion of people without the disease that test negative.
Specificity: It is the true positive rate, that is, the proportion of people with the disease that test positive.

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Sensitivity of 60% means that of the 100 - 10 = 90% of people without the disease, 60% test negative and 100 - 60 = 40% test positive.
Specificity of 70% means that of the 10% with the disease, 70% test positive.

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The predictive value of a positive test is:

Probability of a positive test, which is 40% of 90% plus 70% of 10%, so:

$p = 0.4\times0.9 + 0.7\times0.1 = 0.43$