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KiRa [710]
3 years ago
15

Pew Research recently did a study on American's response to the question "Do you think that business corporations make too much

profit?" A random sample of 300 Americans found that 179 agreed. Use a 1% level of significance to test if the proportion of Americans who feel businesses make too much profit is greater than 50%.
1. State the necessary requirements and if they are met

2. State null and alternate hypotheses

3. Give test statistic and one of {P-value or critical value}

4. State your conclusion in real world terms.
Mathematics
1 answer:
kirill115 [55]3 years ago
4 0

Answer:

comparison

Step-by-step explanation:

comparison

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The radius of a circle is 1 kilometer. What is the circle's area?
Lina20 [59]

Answer:

3.14km^2

Step-by-step explanation:

area of circle= πr^2

=3.14×1^2

=3.14km^2

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Find the minimum angle of rotation of the given figure a. 40* b. 60* c. 45* d. 8*
Mila [183]
I’m not an expert at this but my guess is 45 degrees. Can you let me know what the correct answer was?
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3 years ago
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Solve the equation using the substitution u = y/x. When u = y/x is substituted into the equation, the equation becomes separable
bekas [8.4K]

Answer:

\frac{u^2+3}{-u^3+u^2-2u}u'=\frac{1}{x}

Step-by-step explanation:

First step: I'm going to solve our substitution for y:

u=\frac{y}{x}

Multiply both sides by x:

ux=y

Second step: Differentiate the substitution:

u'x+u=y'

Third step: Plug in first and second step into the given equation dy/dx=f(x,y):

u'x+u=\frac{x(ux)+(ux)^2}{3x^2+(ux)^2}

u'x+u=\frac{ux^2+u^2x^2}{3x^2+u^2x^2}

We are going to simplify what we can.

Every term in the fraction on the right hand side of equation contains a factor of x^2 so I'm going to divide top and bottom by x^2:

u'x+u=\frac{u+u^2}{3+u^2}

Now I have no idea what your left hand side is suppose to look like but I'm going to keep going here:

Subtract u on both sides:

u'x=\frac{u+u^2}{3+u^2}-u

Find a common denominator: Multiply second term on right hand side by \frac{3+u^2}{3+u^2}:

u'x=\frac{u+u^2}{3+u^2}-\frac{u(3+u^2)}{3+u^2}

Combine fractions while also distributing u to terms in ( ):

u'x=\frac{u+u^2-3u-u^3}{3+u^2}

u'x=\frac{-u^3+u^2-2u}{3+u^2}

Third step: I'm going to separate the variables:

Multiply both sides by the reciprocal of the right hand side fraction.

u' \frac{3+u^2}{-u^3+u^2-2u}x=1

Divide both sides by x:

\frac{3+u^2}{-u^3+u^2-2u}u'=\frac{1}{x}

Reorder the top a little of left hand side using the commutative property for addition:

\frac{u^2+3}{-u^3+u^2-2u}u'=\frac{1}{x}

The expression on left hand side almost matches your expression but not quite so something seems a little off.

5 0
3 years ago
If you can help me out on this it would be a major help!
allochka39001 [22]

Answer:

I have provided an explanation on the attached picture. Good Luck.

5 0
3 years ago
Plz help me with this
jekas [21]

Answer:

10x^3 - 34x^2 + 33x - 7

Step-by-step explanation:

Multiply each term of the trinomial by each term of the binomial. Then combine like terms.

(2x^2 - 4x + 1)(5x - 7) =

= 10x^3 - 14x^2 - 20x^2 + 28x + 5x - 7

= 10x^3 - 34x^2 + 33x - 7

3 0
3 years ago
Read 2 more answers
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