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3 years ago

Solve R = 1+30 for w Please help I have a test tomorrow and this is a study guide

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

5 0

Answer:

8 cause ur adding 3 and 1 to get 4 then multiplying by 2 and u get 8. Hope this helps bye!

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A factory received a shipment of 11 hammers, and the vendor who sold the items knows there are 2 hammers in the shipment that ar

zhenek [66]

Question:

If a sample of 2 hammer is selected

(a) find the probability that all in the sample are defective.

(b) find the probability that none in the sample are defective.

Answer:

a $Pr = \frac{2}{110}$

b $Pr = \frac{72}{110}$

Step-by-step explanation:

Given

$n = 11$ --- hammers

$r = 2$ --- selection

This will be treated as selection without replacement. So, 1 will be subtracted from subsequent probabilities

Solving (a): Probability that both selection are defective.

For two selections, the probability that all are defective is:

$Pr = P(D) * P(D)$

$Pr = \frac{2}{11} * \frac{2-1}{11-1}$

$Pr = \frac{2}{11} * \frac{1}{10}$

$Pr = \frac{2}{110}$

Solving (b): Probability that none are defective.

The probability that a selection is not defective is:

$P(D') = \frac{9}{11}$

For two selections, the probability that all are not defective is:

$Pr = P(D') * P(D')$

$Pr = \frac{9}{11} * \frac{9-1}{11-1}$

$Pr = \frac{9}{11} * \frac{8}{10}$

$Pr = \frac{72}{110}$

8 0

2 years ago

How do I work out this question ??

djyliett [7]

Well read the story part of your paragraph. You need to cut out all of the extra stuff and focus on how fast they are going. Then make a chart symbolizing this to find where they directly meet:) If you are able submit the chart with your answer

6 0

2 years ago

nancy and lisa played 20 sets of tennis. nancy won 12 of them. write the ratio of nancy's wins to the total number of sets in si

kirill [66]

Total play = 20

Nancy win = 12

Ratio would be: 12/20 = 6/10 = 3/5

So, your answer is 3/5

4 0

3 years ago

Add. Simplify the answer and write it as a mixed number. 1/4+4/5+9/10

djverab [1.8K]

Answer:

39/20 = 1.95

That's my simplified answer

39/20 = 1 19/20

Will this help?

Step-by-step explanation:

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3 years ago

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Licemer1 [7]

These triangles are not congruent. They only have 2 sides and one angle in common, and that is not a congruency theorem.

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3 years ago

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