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JulsSmile [24]
2 years ago
11

A rectangle has a length of 12 meters and a width of 400 centimeters. What is the perimeter, in cm, of the rectangle?

Mathematics
2 answers:
MariettaO [177]2 years ago
8 0

Answer:

D . 3,200

Step-by-step explanation:

melisa1 [442]2 years ago
3 0
824 cm perimeter. 100% sure now
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The square root of 6 is 2.449...
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1. Ella has 7 rolls and 6 loose medium shirts. Each shirt costs $10. What is the value of her
weqwewe [10]

Answer:

the value of her medium shirts is $60 if Ella makes 100 more shirts her new value is $600

6 0
2 years ago
How many students must be randomly selected to estimate the mean weekly earnings of students at one college? We want 95% confide
kari74 [83]

Answer:

The sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

CI=\bar x\pm z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The margin of error of a (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The information provided is:

<em>σ</em> = $60

<em>MOE</em> = $2

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the sample size as follows:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

       n=[\frac{z_{\alpha/2}\times \sigma }{MOE}]^{2}

          =[\frac{1.96\times 60}{2}]^{2}

          =3457.44\\\approx 3458

Thus, the sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

8 0
2 years ago
Plzz help with this one problem ASAP
Mrac [35]

Answer: b

Step-by-step explanation: I don't know but I know it b

8 0
2 years ago
The perimeter is 22 how much bigger is the longest side than the shortest side
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2 is the shortest and 11 is the longest
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