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3 years ago

What is the answer to the math problem?

Mathematics

1 answer:

Sergio039 [100]3 years ago

6 0

Sorry I can't see most of the question so I can't answer it!

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Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

$1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0$

which is true

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3 years ago

Sven determined that the x-coordinate is approximately 3.6 because the point is closer to 4 than 3 and seems to be a little more

mezya [45]

The y-coordinate is between -1 and -2. It is close to halfway between -1 and -2, but it is a little less than halfway.

Answer: Choice B. $y \approx -1.4$

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2 years ago

Read 2 more answers

George has $5.00 to spend on candy. If each candy bar costs $0.85, how many candy bars can he buy?

MrRissso [65]

A he can buy five candy bars and will have 88 cents left over.

7 0

2 years ago

You research the cost of a gallon of gasoline over several years to look for a trend. The table shows your data. The line of bes

Blizzard [7]

Plotting the data to get the line of best fit, it is:
y<span> = 0.087</span>x<span> + 0.587

substitute x=2030-1980=50,
y = $4.94 is the price in 2030</span>

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2 years ago

The value of x and y

kompoz [17]

Answer:

?????

Step-by-step explanation:

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3 years ago