Ask question

Ask question

All categories

3 years ago

5

Help me with this too please hrlp

1 answer:

Alex3 years ago

6 0

Answer:

3 * 10^4

Step-by-step explanation:

Here, we want to make a division

We want to divide 9 * 10^2 by 3 * 10^-2

That would be;

(9 * 10^2)/(3 * 10^-2)

= 9/3 * 10^2-(-2)

= 3 * 10^4

You might be interested in

What's 1 + 1, it's very easy

Bingel [31]

1 + 1 is 2 I did it woop woop so smart

4 0

3 years ago

Read 2 more answers

Your teacher will report the mean and standard deviation of the sampling distribution created by the class.

sukhopar [10]

Answer:

$\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}$

$\hat p = 0.493$

And the deviation is given by this formula:

$s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085$

And as we can see the population proportion expected for the number of heads 0.5 is very close to the mean of the sampling distribution, the error is :

$\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%$

Step-by-step explanation:

Assuming the data on the figure attached. We ar assuming that this is a sampling distribution of sample proportions of heads in 40 flips of a coin.

As we can see we have the following values:

0.25, 0.35, 0.375,0.375, 0.40,0.40,0.40, 0.425,0.425,0.425, 0.45,0.45,0.45,0.45, 0.475,0.475,0.475, 0.475,0.475, 0.50,0.50,0.50, 0.525,0.525,0.525,0.525, 0.55,0.55,0.55,0.55,0.55, 0.575,0.575,0.575 0.575, 0.575, 0.60,0.60, 0.65,0.65

And we can calculate the sample proportion with the following formula:

$\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}$

$\hat p = 0.493$

And the deviation is given by this formula:

$s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085$

And as we can see the population proportion expected for the number of heads 0.5 is very close to the mean of the sampling distribution, the error is :

$\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%$

4 0

3 years ago

If f(x) is a function and f(1) = 5, then which of the following could not be true?

Natasha_Volkova [10]

It can't be f(1) = 1 because a function can't have two images on the same x.

8 0

3 years ago

Read 2 more answers

What is (x+5)(x+6) please I need help in less than 10 mins

liq [111]

Answer:

x ^2 + 11 x + 30

Step-by-step explanation:

Expand the polynomial using the FOIL method.

x^2 + 6x + 5x + 30

Collect the like terms

x^2 + (6x + 5x) + 30

Simplify

x ^2 + 11 x + 30

Hope this helps :)

5 0

3 years ago

Consider the equation 4•e^2.7x = 33

Yanka [14]

Answer:

$\huge x = ln( \frac{33}{4} ) \times \frac{ 10}{27} \\ \huge \: x \approx 0.782$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

logarithm
PEMDAS

<h3>let's solve:</h3>

$4 {e}^{2.7x} = 33 \\ {e}^{2.7x} = \frac{33}{4} \\ 2.7x = ln( \frac{33}{4} ) \\ x = ln( \frac{33}{4} ) \times \frac{ 10}{27} \\ x \approx 0.782$

7 0

3 years ago