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3 years ago

the average person loses about 8×10 strands of hair how many strands of hair does the average person lose in 9 days

2 answers:

5 0

810 strands of hair is lost in 9 days
(8x10= 80, 80x9=720)
count on your fingers (ONLY WHEN MULTIPLYING BY 9) and then put the finger down that you're multiplying 9 by and then look at the fingers around it. (7 and 2 then since its 80 add a 0!)

Masteriza [31]3 years ago

3 0

It depends you mean per day or if so..... it is 720

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g In 2013, the Pew Research Foundation reported that 43% of U.S. adults report that they live with one or more chronic condition

SOVA2 [1]

Answer:

We are 95% confident that the true proportion of U.S. adults who live with one or more chronic conditions is between 39.7% and 46.33%

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 43\% = 0.43$

The standard error is $SE = 0.017$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100-95)\%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * SE$

=> $E = 1.96 * 0.017$

=> $E = 0.03332$

Generally 95% confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.43 -0.03332 < p < 0.43 + 0.03332$

=> $0.39668 < p < 0.46332$

Converting to percentage

$(0.39668 * 100)< p < (0.46332*100)$

$39.7\% < p < 46.33 \%$

7 0

3 years ago

QUICKLY HELP! Which relationship between x and y in the equation shows a proportional relationship?

Darina [25.2K]

Y = 12x is a direct variation which is a proportion.
As x increases y also increases.

3 0

3 years ago

Can I get help on 6 and 7

Aloiza [94]

The cost depend on the number pencils, so the cost is the y and # of pencils is the x
Same as for question 7
To graph, the length depend on the time, so length is y, time is x
6. Linear
7. Not