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3 years ago

Error Analysis A classmate says that the system consisting of x=0, y=0, and z=0 has no solution. Explain the student's error.

Mathematics

1 answer:

harina [27]3 years ago

3 0

The system can't have only zeros .
It will be only one answer or there will be no answer.
Hence one variable at least not equal to zero for proper system.

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Como simplificar 120/45

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Answer:

simplified in the exact form: 8/3

simplified in decimal form: 2.6

simplified in mixed number form: 2 2/3

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3 years ago

Amanda leaned a 15-foot ladder against the top of her house so she could get on the roof, which is 12 feet from the ground.

valentinak56 [21]

If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)

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3 years ago

A marble is randomly selected from a bag. The probability of selecting a marble with dots on it is 0.2. The probability of selec

marin [14]

Answer:

0.5

Step-by-step explanation:

Let D be the event of selecting a marble with dots.

Let P be the event of selecting a purple marble.

The probability of selecting a marble with dots, P(D)=0.2

The probability of selecting a marble that is both purple and has dots, $P(D \cap P)=0.1$

We want to determine the probability of selecting a purple marble given that the marble has dots on it, P(P|D)

By the definition of conditional probability:

$P(P|D)= \dfrac{P(P \cap D)}{P(D)} \\= \dfrac{0.1}{0.2}\\ =0.5$

The probability of selecting a purple marble given that the marble has dots on it is 0.5.

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3 years ago

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vova2212 [387]

Answer:

I think the answer is C

Step-by-step explanation:

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3 years ago

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tekilochka [14]

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3 years ago

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Error Analysis A classmate says that the system consisting of x=0, y=0, and z=0 has no solution. Explain the student's error.​

Error Analysis A classmate says that the system consisting of x=0, y=0, and z=0 has no solution. Explain the student's error.