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Bond [772]
3 years ago
12

Answer while showing work I need u to show ur work and answer

Mathematics
1 answer:
skad [1K]3 years ago
4 0

Answer:

7cm

Step-by-step explanation:

One side of a square is increased by 8 cm, let us say the length got increased by 8 cm. So we have length of x + 8 cm

An adjacent side, the width, decreased by 2 cm. So we have width of x - 2cm

Perimeter of rectangle = 2(length + width)

40 = 2( (x + 8) + ( x - 2) )

40 = 2( 2x + 6)

40 = 4x + 12

28 = 4x

x = 7 cm

That is 7 cm of the length of the side of the square

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"A laboratory tested 73 chicken eggs and found that the mean amount of cholesterol was 230 milligrams with LaTeX: \sigmaσ = 17.4
Scrat [10]

Answer:

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

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{1-0.95}{2} = 0.025

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

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find 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.

M = 1.96*\frac{17.4}{\sqrt{73}} = 3.99

The lower end of the interval is the sample mean subtracted by M. So it is 230 - 3.99 = 226.01

The upper end of the interval is the sample mean added to M. So it is 230 + 3.99 = 233.99.

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

4 0
3 years ago
Lauren took 12 hours to read a 360 page book. At this rate, how long will it take her to read a 1200 page book?
Sliva [168]

Answer:

About 48 hours or 2 days.

Step-by-step explanation:

360 + 360 = 720 + 360 = 1080 + 360 = 1440

12x4=48

4 0
3 years ago
Whats the inequality c−12>−4
marshall27 [118]

Answer:

c>16

Step-by-step explanation:

c-12>4

c> 4+12

c> 16

8 0
2 years ago
Which fraction has the value that's equal to 3/4
mamaluj [8]

One of the fractions that’s equal to \frac{3}{4} is \frac{12}{16}

<u>Solution:</u>

Given that , we have to find fractions which has the same value as that of the fraction \frac{3}{4}

Now, we know that, there are several fractions with values equal to \frac{3}{4}

To find them, just multiply the numerator and denominator by the same number.

\begin{array}{l}{3 \times 2=6} \\\\ {4 \times 2=8}\end{array}

Therefore, \frac{6}{8} is equal to \frac{3}{4}

We can do the same with 4, to get \frac{12}{16}, or any other number beyond that.

Hence, one of the fractions that’s equal to \frac{3}{4} is \frac{12}{16}

4 0
3 years ago
What is the solution to the equation -5(s-30)=-10
melomori [17]

Answer: S=28

Step-by-step explanation:

4 0
2 years ago
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