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4 years ago

(5 1/4)÷(−2 1/2) i need it to be mixed number, in simplified form quick 5 mins plzzz

1 answer:

8 0

First turn then into a decimal, it will be easier to divide. Then, divide the decimal. Take your answer and turn it into a fraction. If it's improper, turn it into a mixed number and simply it, if you have any questions ask

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Can someone help me out --x-3>-1

Sunny_sXe [5.5K]

So -x-3>-1
add x to both sides
-3>-1+x
add 1 to both sides
-2>x
so x is any number less than -2 but not including -2

6 0

3 years ago

A randomized telephone survey of adults in the United States determines that a certain number out of 504 respondents have one or

Katena32 [7]

Answer:

$\hat p=\frac{0.56137+0.60529}{2}= 0.58333$

The critical value for 95% of confidence is $z_{\alpha/2}=1.96$

And since we know the total and the proportion is defined as:

$\hat p=\frac{X}{n}$

If we solve for X (number of people who say yes) we got:

$X= 0.58333* 504= 293.998 \approx 294$

And the best answer would be:

294

Step-by-step explanation:

We know that the confidence interval for the proportion is given by:

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

The margin of error can be calculated with this formula:

$ME=\frac{0.60529- 0.56137}{2}= 0.02196$

And the estimation for the true proportion is:

$\hat p=\frac{0.56137+0.60529}{2}= 0.58333$

The critical value for 95% of confidence is $z_{\alpha/2}=1.96$

And since we know the total and the proportion is defined as:

$\hat p=\frac{X}{n}$

If we solve for X (number of people who say yes) we got:

$X= 0.58333* 504= 293.998 \approx 294$

And the best answer would be:

294

8 0

3 years ago

a flock of parrots was sitting a tree. five more joined them then half the total flew away leaving seven parrots how many were i

Brut [27]

Answer:

Step-by-step explanation:

9+5=14/2=7

8 0

3 years ago

Describe a cube use the words base edges and vertices in your description

bekas [8.4K]

Answer:

Step-by-step explanation:

i dont understand

5 0

3 years ago

Tiffany is sending a package that may not exceed 16 pounds. The package contains books that weigh A total of 93/8 pounds. The ot

Mashutka [201]

93/8 is equal to 11.625 or 11.6 pounds, which means yes, she can send the package. The other packages weighed 6.96 or 7 pounds in short just in case you needed to know that ;)

6 0

3 years ago

Read 2 more answers