3 years ago

Please answer below :)

Mathematics

1 answer:

Luden [163]3 years ago

6 0

Answer:(x+2)(x+8)

Step-by-step explanation:

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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

Ray predicted he would score 18 points during a basketball game. He only scored 12 points. What is his percent error

Andre45 [30]

Answer:

hey read this no quema cuh

Step-by-step explanation:

3 0

3 years ago

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Math question please show work

garik1379 [7]

You calculate this using the Cosine Rule

x^2 = 60.5^2 + 226^2 - 2*60.5*226 cos 39

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x = 182.98

He threw the ball approximately 183 feet.

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3 years ago

7x + y = 7<br> y = [ ? ]x+ []

otez555 [7]

Y=-7x+7

hope this helped!

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3 years ago

I'll give brainliest to the correct answer! (Picture below)

Lina20 [59]

9514 1404 393

Answer:

D. 7

Step-by-step explanation:

The equation is ...

x = a(y +1)² -3

For the point (x, y) = (4, 0), we have ...

4 = a(0 -1)² -3

7 = a . . . . . . . . . . . . add 3, simplify

The leading coefficient is 7.

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3 years ago