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Gwar [14]
3 years ago
15

Add 6/7 + 80/9 . Enter your answer below as an improper fraction in lowest terms, using the slash ( / ) as the fraction bar.

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
8 0
<span>9.75 is the answer to your question</span>
tino4ka555 [31]3 years ago
7 0
First find a common denominator.(63)
Then add your new numerators together(54 + 560)
614/63.
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Find all complex solutions of 2x^2+x+6=0. (If there is more than one solution, separate them with commas.)
ankoles [38]

Answer:

x=-1/4+i*sqrt(47)/4 and x=x=-1/4-i*sqrt(47)/4

Step-by-step explanation:

Using quadratic formula, x=(-1±sqrt(1-48))/4.

x=-1/4+i*sqrt(47)/4 and x=x=-1/4-i*sqrt(47)/4

4 0
3 years ago
Read 2 more answers
Brandon owes his brother $100. He will repay his brother $5 each week. Which expression gives the amount in dollars Brandon will
trasher [3.6K]
It’s b because n equals weeks so after the first week he has given back five dollars because 5 time 1 is 5.
8 0
4 years ago
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What is the area of the blue shaded region​???????
Anna [14]

Answer:

Step-by-step explanation:

22/7x7^2=154

22/7x3^2=28(approx)

154-28=126

5 0
3 years ago
13. Interpret the phrase ""margin of sampling error is ±1 percentage point.""
Ulleksa [173]

Answer:

On this case a margin of error of \pm 1 \% means that the true population proportion is 1% above or below the estimated proportion calculated from the sample. And this value helps in order to find the limits for a confidence interval with a confidence given.  

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

On this case a margin of error of \pm 1 \% means that the true population proportion is 1% above or below the estimated proportion calculated from the sample. And this value helps in order to find the limits for a confidence interval with a confidence given.  

4 0
3 years ago
PLS HELP WILL MARK BRAINLYIST
Setler79 [48]

Step-by-step explanation:

the solution to a system of functions (lines or any other form of curve) is the point (or points), where they intersect.

in this case : the point (2, 0)

FYI : if there is no intersection, then there is no solution at all (like with parallel lines).

if the curves fully overlap for at least some distance, then we have infinitely many solutions (at least for real numbers). like for identical lines.

4 0
1 year ago
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