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lara31 [8.8K]
3 years ago
13

What is the domain of the function on this graph?​

Mathematics
2 answers:
bonufazy [111]3 years ago
6 0
(Can I have brainliest btw?)

Levart [38]3 years ago
5 0

Answer:

- 6\leqslant x \leqslant 6

[-6 6]

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How to find which trinomials are perfect square trinomials
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Answer:

<em>An expression obtained from the square of the binomial equation is a perfect square trinomial. If a trinomial is in the form </em>

<em>ax 2 + bx + c</em>

<em> is said to be a perfect square, if and only if it satisfies the condition b 2 = 4ac.</em>

Step-by-step explanation:

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<em>kai6417</em>

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3 years ago
A survey of 25 randomly selected customers found the ages shown (in years). The mean is 32.64 years and the standard deviation i
____ [38]

Answer:

See below for answers and explanations

Step-by-step explanation:

<u>Part A</u>

Assuming that conditions have been met for the interval, we use the formula \displaystyle CI=\bar{x}\pm t\frac{s}{\sqrt{n}} where \bar{x} represents the sample mean, t represents the critical value, s represents the sample standard deviation, and n is the sample size.

The critical value of t for an 80% confidence level with degrees of freedom df=n-1=25-1=24 is equivalent to t=1.317836

Thus, we can compute the confidence interval:

\displaystyle CI=\bar{x}\pm t\frac{s}{\sqrt{n}}\\\\CI=32.64\pm1.317836\biggr(\frac{9.39}{\sqrt{25}}\biggr)\\\\CI\approx\{30.17,35.11\}

Therefore, we are 80% confident that the true mean age of all customers is between 30.17 and 35.11 years.

<u>Part B</u>

The margin of error is \displaystyle t\frac{s}{\sqrt{n}}=1.317836\biggr(\frac{9.39}{\sqrt{25}}\biggr)\approx2.47

6 0
3 years ago
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spayn [35]

Answer:

Number 3 is the correct awnser

Your numbers are confusing

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Please can someone help with this question
kotykmax [81]

Step-by-step explanation:

density is -mass over volume

<h3>so calculate and get your answer</h3>
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4 years ago
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