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3 years ago

What are the solutions of x^2+6x-6=10

Mathematics

2 answers:

Alchen [17]3 years ago

4 0

Answer:

ifhofgoefouegf

Step-by-step explanation:

MrMuchimi3 years ago

4 0

Answers (there are two solutions):

x = -8
x = 2

I hope this helps!

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2 (x - 2/3) = 0 solve for x

Rama09 [41]

X would equal 2/3 or in decimal form, 0.6 repeated

6 0

3 years ago

Read 2 more answers

6 2/3 divided by 5/6

Yuki888 [10]

[6+2/3] : [5/6]
[20/3]:[5/6]
[20/3]x[6/5]
[120/15]
=8

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3 0

3 years ago

On September 16, 2011, the New York Times reported that the American public's approval rating of Congress had sunk to an all-tim

777dan777 [17]

Answer:

The sample size is $n = 451$

Step-by-step explanation:

From the question we are told that

The margin of error is E = 0.03

The sample proportion is $\^ p = 0.12$

From the question we are told the confidence level is 95% , hence the level of significance is

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

=> $\alpha = 0.05$

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

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

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )$

=> $n = [\frac{1.96}{0.03} ]^2 *0.12 (1 - 0.12 )$

=> $n = 451$

3 0

3 years ago

A national business magazine reports that the mean age of retirement for women executives is 61.7. A women’s rights organization

Marina CMI [18]

Answer:

The calculated value |Z| = |-2.0375| = 2.0375<2.0541.96 at 0.02 level of significance

A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.

Step-by-step explanation:

Step(i):-

Given that the mean age of retirement for women, executives is 61.7

Given mean of the Population = 61.7

Given that the size of the sample 'n' = 82

Given that the mean of sample x⁻ = 60.8

Given that the standard deviation 'σ' = 4.0years

Step(ii):-

Null hypothesis:H₀: μ ≠ 61.7

Alternative Hypothesis: H₁: μ = 61.7

Test statistic

$Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{60.8-61.7}{\frac{4.0}{\sqrt{82} } }$

Z = -2.0375

|Z| = |-2.0375| = 2.0375< 2.054 at 0.02 level of significance

Final answer:-

The calculated value |Z| = |-2.0375| = 2.0375 <2.054 at 0.02 level of significance

A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.

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3 years ago

What are the domain and range of the function on the graph?

ale4655 [162]

Domain means the x values and range means the y values

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3 years ago