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Nataliya [291]
3 years ago
9

What does the problem equal

Mathematics
1 answer:
vesna_86 [32]3 years ago
6 0
Answer: 10•76=760 :)
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According to a Field Poll conducted February 8 – 17, 2005, 79% of California adults (actual results are 400 out of 506 surveyed)
Jobisdone [24]

Answer: (0.760, 0.820)

Step-by-step explanation:

Let p be the population proportion of all adults feel that "education and our schools" is one of the top issues facing California.

Given : 79% (actual results are 400 out of 506 surveyed) of California adults feel that "education and our schools" is one of the top issues facing California.

i.e.Sample size : n= 506

Sample proportion : \hat{p}=0.79

Critical value for 90% confidence interval ( Using z-value table) :

z=1.645

Now, the 90% confidence interval for the population proportion will be :

\hat{p}\pm z\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

i.e. 0.79\pm (1.645)\sqrt{\dfrac{0.79(1-0.79)}{506}}

i.e. 0.79\pm (1.645)(0.0181)

\approx0.79\pm 0.030=(0.79-0.030,\ 0.79+0.030)\\\\=(0.760,\ 0.820)

Hence, the 90% confidence interval for the population proportion= (0.760, 0.820)

7 0
4 years ago
Solve y = x2 +7 for x.
FromTheMoon [43]

\huge\boxed{x=\sqrt{y-7}}

We are trying to isolate x. Subtract 7 from both sides. y-7=x^2

Find the square root of both sides. \boxed{\sqrt{y-7}}=x

<em>Note: I've attached a graph of y=x^2 +7.</em>

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In a topographical map of a city, the vertices of the city limits are A (10, 9), B (18, 9), C (18, 2), D (14, 4.5), and E (10, 4
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Srry don't have answer NEEEEEDDD HELP!!
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What’s the value of point a on the x axis
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The value of point a on the x axis is anywhere that’s from left to right from the origin (0,0) There should normally be indications on where the graph is.
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The checked answers you have are correct.
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