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3 years ago

Solve and factorise x^2-8x+16=0

Mathematics

1 answer:

goblinko [34]3 years ago

7 0

Answer:

x=4x therefore the answer is 4x

Step-by-step explanation:

x^2-8x+16=0

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PLEASE HELP, DUE SOON !!

nydimaria [60]

Answer:

-0

Step-by-step explanation:

W = -3

X = 3

Z = -9

Y = 6

-3 + 3 = 0

-9 + 6 = -3

-3 + 0 = -3

Then -3 is closest to -0! Cause when rounding, 4 and under as an example as 24 the round will be 20! And 25 will be 30

8 0

3 years ago

Which expression should you simplify to find the 90% confidence interval,

bogdanovich [222]

Answer:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is $\hat p=0.45$

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ .

And the critical value is: $z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the true population proportion is interest is given by this formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

Replacing the values provided we got:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

5 0

3 years ago

Could someone please help with this math problem??!

slavikrds [6]

I agree with this person that will be a good use

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3 years ago

Which equation is represented by the graph below?

kirill115 [55]

Answer:

y = $\frac{2}{3}x$ + 6

Step-by-step explanation:

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3 years ago

How do I add mixed numbers 8 1/2 +1/6

sergij07 [2.7K]

Answer:

26/3 is your answer as a improper fraction

8.6 is your answer as a decimal

8 2/3 is your answer as a mixed number

How to add mixed numbers Step-by-step:

1) find the least common denominator

2) find the equivalent fractions

3) add the the fractions, add the whole numbers

4) write your answer in lowest terms

6 0

3 years ago

Read 2 more answers