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astra-53 [7]
2 years ago
6

Pls help i need help​

Mathematics
1 answer:
Thepotemich [5.8K]2 years ago
4 0

(5^6)^0 \\\\=5^0\\\\=1

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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
3 years ago
Use Pythagorean theorem to find right triangle side lengths 8 and 10
sp2606 [1]

Answer:

6

Step-by-step explanation:

a^{2}+b^{2} =c^{2}  \\\\8^{2}+b^{2} =10^{2}  \\64+b^{2}=100\\b^{2}=36\\\sqrt{36}  =6\\b=6

4 0
3 years ago
A recipe that makes 4 servings calls for Two-thirds cup of flour. How much flour is required to make 20 servings?
Karo-lina-s [1.5K]

Answer:

8/3

Step-by-step explanation:

7 0
3 years ago
An employee worked 36 hours last week. This week, she worked 48 hours. Find the percent increase. Round to the nearest percent.
ioda

Answer:

There was a 25% increase.

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP
stepan [7]

Answer:

to big but i will slove it for u ok so see solution c one is correct

5 0
3 years ago
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