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2 years ago

5

Kirsten is making lanyards for a convention. She needs to make 1000 lanyards and knows that 1 lanyards uses 1.75 feet cord. How

much cord will Kirsten need

2 answers:

Tema [17]2 years ago

5 0

She will need 1,750 feet of cord.

professor190 [17]2 years ago

5 0

Its 1000 x 1.75 = 1750 feet of cord. She didnt need to do anything else. Just multiply.

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Answer:

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1 year ago

Which measure is less than 435 inches?

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2 years ago

Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia

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Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

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margin of error (ME) around the mean can be calculated using the formula

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2 years ago

Find all the solutions for the equation:

Contact [7]

$2y^2\,\mathrm dx-(x+y)^2\,\mathrm dy=0$

Divide both sides by $x^2\,\mathrm dx$ to get

$2\left(\dfrac yx\right)^2-\left(1+\dfrac yx\right)^2\dfrac{\mathrm dy}{\mathrm dx}=0$

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{2\left(\frac yx\right)^2}{\left(1+\frac yx\right)^2}$

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Integrate both sides. On the left, split up the integrand into partial fractions.

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$\implies v^2+2v+1=a(v^2+1)+(bv+c)v$

$\implies v^2+2v+1=(a+b)v^2+cv+a$

$\implies a=1,b=0,c=2$

Then

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On the right, we have

$\displaystyle-\int\frac{\mathrm dx}x=-\ln|x|+C$

Solving for $v(x)$ explicitly is unlikely to succeed, so we leave the solution in implicit form,

$\ln|v(x)|+2\tan^{-1}v(x)=-\ln|x|+C$

and finally solve in terms of $y(x)$ by replacing $v(x)=\dfrac{y(x)}x$ :

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$\boxed{\ln|y(x)|+2\tan^{-1}\dfrac{y(x)}x=C}$

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2 years ago

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Now for the sales tax. We apply a similar method.
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3 years ago