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3 years ago

Write the smallest possible odd number with all the following dight 5,2,3,7.

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

5 0

Answer:

2357

Step-by-step explanation:

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Solve for x. <br><br> -15 + 12x = 5x + 7 - 3x

zimovet [89]

Answer:

x = 2.2

Step-by-step explanation:

-15 + 12x = 5x + 7 - 3x

Combine like terms

-15 +12x = 2x +7

Subtract 2x from each side

-15 +12x -2x = 2x-2x +7

-15 +10x = 7

Add 15 from each side

-15+15 +10x = 7+15

10x = 22

Divide each side by 10

10x/10 = 22/10

x = 2.2

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3 years ago

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ou are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on cons

PolarNik [594]

Answer:

$(\frac{4\sigma}{2.056})^2$ , rounded up, if needed, citizens should be included in the sample, in which $\sigma$ is the standard deviation of the population.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.96}{2} = 0.02$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.02 = 0.98$ , so Z = 2.056.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Within 4 years of the actual mean

We have to find n for which M = 4. So

$M = z\frac{\sigma}{\sqrt{n}}$

$4 = 2.056\frac{\sigma}{\sqrt{n}}$

$2.056\sqrt{n} = 4\sigma$

$\sqrt{n} = \frac{4\sigma}{2.056}$

$(\sqrt{n})^2 = (\frac{4\sigma}{2.056})^2$

$n = (\frac{4\sigma}{2.056})^2$

$(\frac{4\sigma}{2.056})^2$ , rounded up, if needed, citizens should be included in the sample, in which $\sigma$ is the standard deviation of the population.

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3 years ago

Define amplitude, period, and frequency for trig functions.

uysha [10]

Amplitude - It is the magnitude of an oscillation. In addition, it is also used to refer to Jacobi amplitude.

Period - The intervals where the periodic function recur.

Frequency - The number of occurrences within the given period of time.

Good luck :)

7 0

3 years ago

After the fraction x plus 1 all over 2 minus the fraction x plus 2 all over 3 x have been combined using the least common denomi

nydimaria [60]

Let's work out the process to find the numerator:

(x+2)/2 - (x+1)/3x Factor using the LCD, 6x

3x(x+2)/6x - 2(x+1)/6x

(3x² + 6x - 2x - 2)/6x

= (3x² + 4x - 2)/6x

Answer is 3x² + 4x - 2

Hopefully I did this correct, Not to good with math c':

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3 years ago

Reiko started a business selling home medical supplies. She spent $6500 to obtain her merchandise, and it costs her $550 per wee

Vinvika [58]

900x is greater than or equal to 550x+6500. In this equation, I used x to represent the number of weeks, 900x to represent her profits, and 550x+6500 to represent her costs. Then, since 19 is the lowest integer that we can plug into the equation to keep the inequality true, it is our answer, 19 weeks.

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4 years ago

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Write the smallest possible odd number with all the following dight 5,2,3,7.​

Write the smallest possible odd number with all the following dight 5,2,3,7.