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4 years ago

How do you add mix numbers by a fraction

Mathematics

1 answer:

kap26 [50]4 years ago

3 0

Hope this helps the seconds one I ease my for sure but the first one I’m pretty sure is right!

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-8x+5y=-40 slope-intercept form

Sunny_sXe [5.5K]

-8x+5y= -40

First, add 8x to both sides

5y= 8x-40

Now divide both sides by 5

y= 8/5x-8

8 0

4 years ago

In 2015 as part of the General Social Survey, 1289 randomly selected American adults responded to this question:

Radda [10]

Answer:

B (0.312, 0.364)

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$

For this problem, we have that:

1289 randomly selected American adults responded to this question. This means that $n = 1289$ .

Of the respondents, 436 replied that America is doing about the right amount. This means that $\pi = \frac{436}{1289} = 0.3382$ .

Determine a 95% confidence interval for the proportion of all the registered voters who will vote for the Republican Party. 

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3382 - 1.96\sqrt{\frac{0.3382*0.6618}{1289}} = 0.312$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.3382 + 1.96\sqrt{\frac{0.3382*0.6618}{1289}} = 0.364$

The 95% confidence interval is:

B (0.312, 0.364)

5 0

3 years ago

QUESTION 2 of 10: True or False: Eating one large meal per day is the best way to maintain your health.

Artist 52 [7]

Answer:

True

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

George is drawing the outside lines on a soccer field that is 96 feet by 120 feet. What is the total length of the line he will

Alexandra [31]

Answer:

432 feet

Step-by-step explanation:

The total length of line he will draw is equivalent to the perimeter of the plane shape he is drawing. Given that it is a soccer field measured as 96 feet by 120 feet, the shape is a rectangle.

The perimeter p of a rectangle whose length is l and width is b is given as

p = 2(l+b)

Hence the length of the line he must draw

= 2(96 + 120)

= 2 * 216

= 432 feet

3 0

4 years ago

If Tanø =a/b Find the value of sinø+cosø/sinø-cosø

inysia [295]

Answer:

$\frac{b+a}{b-a}$