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hodyreva [135]
2 years ago
8

Find an expression for c that will make 9x2 + 12xy +c aperfect square trinomial

Mathematics
1 answer:
dezoksy [38]2 years ago
4 0

Answer: To find the value , divide the coefficient of by and square the result.

Step-by-step explanation:Use the formula  ( b 2 ) 2        in order to create a new term in order to find the perfect square trinomial.

9 x 2 − 12 x + c + 4

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¿Por qué la luna no se sale de su órbita y siempre gira en torno a la tierra?
expeople1 [14]

Answer:

El período de rotación de la luna no siempre era igual a su órbita alrededor del planeta. Al igual que la gravedad de la luna afecta las mareas del océano en la Tierra, la gravedad de la Tierra afecta a la luna. Pero debido a que la luna carece de un océano, la Tierra tira de su corteza, creando un maremoto en la línea que apunta hacia la Tierra.

Step-by-step explanation:

7 0
2 years ago
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Solve the inequality. Use algebra to solve the corresponding equation. x^2 - 11x + 30 ≥ 0
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Factor

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2 years ago
What is my current age if i am born on march 14 1993?
mafiozo [28]
Person born on March 4, 1993.

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8 0
3 years ago
Donovan can type 45 words per minute. He needs to type a report that is 9 pages long each page has about 300 words. What is a re
irinina [24]

Answer:

C.60

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3 0
2 years ago
g You are planning an opinion study and are considering taking an SRS of either 200 or 600 people. Explain how the sampling dist
Katen [24]

Answer:

By the Central Limit Theorem, both would be approximately normal and have the same mean. The difference is in the standard deviation, since as the sample size increases, the standard deviation decreases. So the SRS of 600 would have a smaller standard deviation than the SRS of 200.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the sampling distribution of size n of a sample proportion p, the mean is p and the standard deviation is s = \sqrt{\frac{p(1-p)}{n}}

Differences between SRS of 200 and of 600

By the Central Limit Theorem, both would be approximately normal and have the same mean. The difference is in the standard deviation, since as the sample size increases, the standard deviation decreases. So the SRS of 600 would have a smaller standard deviation than the SRS of 200.

6 0
3 years ago
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