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MissTica
3 years ago
13

In the system of equations above,K is a constant and x and y are variable. For what value of k will the system of equations have

no solution?

SAT
1 answer:
Alik [6]3 years ago
3 0

eewrwerwerwrwerwerwerw

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What does this excerpt tell us most about the cat? she sleeps a lot. She is content. She feels cold. She is unconcerned.
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Answer:

She is unconcerned.

Explanation:

8 0
3 years ago
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Students in a statistics class are conducting a survey to estimate the mean number of units students at their college are enroll
Andrew [12]

Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • t is the critical value.
  • n is the sample size.
  • s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a two-tailed <em>95% confidence interval</em>, with 49 - 1 = <em>48 df</em>, is t = 2.0106.

Hence:

\overline{x} - t\frac{s}{\sqrt{n}} = 12.2 - 2.0106\frac{1.6}{\sqrt{49}} = 11.7

\overline{x} + t\frac{s}{\sqrt{n}} = 12.2 + 2.0106\frac{1.6}{\sqrt{49}} = 12.7

The 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).

More can be learned about the t-distribution at brainly.com/question/16162795

4 0
3 years ago
Samuel has a collection of toy cars. His favorites are the 27 red ones which make up 60%, percent of his collection. How many to
Pie

0.60 × collection = 27 cars

collection = 27 cars / 0.60 . . . . divide by the coefficient of the variable

collection = 45 cars

Samuel has 45 cars in his collection.

8 0
3 years ago
Help meh pls
LuckyWell [14K]

Answer:

Percent error = the absolute value of (actual value - expected value) / (expected value)

Percent error = (2.7-2.78)/(2.78)

Percent error = 0.029

Let me know if this helps!

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Which three statements about the gilded age are true.
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i don't know I don't see them

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