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koban [17]
2 years ago
15

Write each verbal expression as an algebraic expression.

Mathematics
1 answer:
harina [27]2 years ago
8 0
1. 9b
2.x^5
3.(3y)/12
4.(1-k)+7
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How much is 2+(95X5)
charle [14.2K]
PEMDAS
Parentheses Exponent Multiplication Division Addition Subtraction
Do the math inside parentheses first
95 x 5 = 475
Now, take away the parentheses
2 + 475 = 477
The answer is 477
3 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\%

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3 years ago
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weqwewe [10]

Answer:the answer to this question is 4

Step-by-step explanation: becuse idk im just trying to gain points sorry

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Kayla was at the surface of a swimming pool and recorded the following two measurements in feet on a number line. -9 which repre
Crank
A) is width i believe i am 90% sure :) i could verry well be wrong though so sorry if i am ;) but..i thought i would say thats cool that shes got the same name as me its not all the popular LOL :)
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Want to be my friend?im a girl!
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