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2 years ago

Add the following numbers

2 answers:

6 0

Key points :
• for part (a) and (b), “+” multiplied by “—” is still negative (—)
• for part (c), “—” multiplied by “—” is positive “+”

feel free to clarify if you have any doubts!

g100num [7]2 years ago

4 0

A. -59.9
b.96.8
c.10.5

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Of all the people applying for a certain job 75% are qualified and 25% are not. The personnel manager claims that she approves q

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Answer:

The probability is: 0.8889.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Approved

Event B: Qualified

Probability of a person being approved:

80% of 75%(qualified)

30% of 25%(not qualified). So

$P(A) = 0.8*0.75 + 0.3*0.25 = 0.675$

Probability of a person being approved and being qualified:

80% of 75%, so:

$P(A \cap B) = 0.8*0.75$

Find the probability that a person is qualified if he or she was approved by the manager.

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.8*0.75}{0.675} = 0.8889$

The probability is: 0.8889.

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3 years ago

Breifly describe the rules of multiplying and dividing integers

Ivan

Answer:

Just multiply the absolute values and make the answer positive. When you multiply two integers with different signs, the result is always negative. Just multiply the absolute values and make the answer negative. When you divide two integers with the same sign, the result is always positive.

Step-by-step explanation:

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Answer:

d= 3(h-2). hope you like it.

Step-by-step explanation:

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