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andreyandreev [35.5K]
3 years ago
11

Which expression is equivalent to 14a + 8?

Mathematics
2 answers:
Georgia [21]3 years ago
6 0
The answer is 2(7a+4) because using distributive property 2 times 7a is 14a and 2 times 4 is 8 so it equals 14a+8
Paladinen [302]3 years ago
3 0
The answer would be 2 ( 7a+4 )

( lol flvs )
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There are 20 machines in a factory. 7 of the machines are defective.
adelina 88 [10]

Answer:

0.1225

Step-by-step explanation:

Given

Number of Machines = 20

Defective Machines = 7

Required

Probability that two selected (with replacement) are defective.

The first step is to define an event that a machine will be defective.

Let M represent the selected machine sis defective.

P(M) = 7/20

Provided that the two selected machines are replaced;

The probability is calculated as thus

P(Both) = P(First Defect) * P(Second Defect)

From tge question, we understand that each selection is replaced before another selection is made.

This means that the probability of first selection and the probability of second selection are independent.

And as such;

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So;

P(Both) = P(First Defect) * P(Second Defect)

PBoth) = 7/20 * 7/20

P(Both) = 49/400

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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Therefore, the height of the lighthouse is approximately 166.6 feet.

7 0
3 years ago
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