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2 years ago

Find the solution of the system of equations. 7x -- 8y = -237x – 7y = -14(?,?)

Mathematics

1 answer:

gtnhenbr [62]2 years ago

6 0

Answer:

(7,9)

Step-by-step explanation:

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Scores on the ACT exam have a N(μ = 18,σ = 6) distribution, while scores on the SAT

elena-14-01-66 [18.8K]

Answer:

Emily has a higher relative score since her z-score is higher. This would mean she scored further above the mean than Xiaoyu.

Step-by-step explanation:

Find the z-scores by subtracting the score they got by the mean and then dividing by the standard deivation of their respective exams.

Xiaoyu:

z = $\frac{27 - 18}{6}$ = 1.5

Emily:

z = $\frac{720 - 500}{100}$ = 2.2

______

Emily has a higher relative score since her z-score is higher. This would mean she scored further above the mean than Xiaoyu.

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2 years ago

A rectangle has an area of 50X5Y5 and a length of 25X3Y which of the following represents the width of a triangle

Rufina [12.5K]

Answer:

2x²y⁴

Step-by-step explanation:

Area = W × L

W = A / L = $\frac{50x^5y^5}{25x^3y}$ = 2x²y⁴

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2 years ago

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Mhhhhhhhhhh welppp i need help

Dahasolnce [82]

Answer:

It does not pass the vertical Line test, because the vertical line test is when you put a line through a something like this circle and if it passes throug it more the once it is not a line.

Step-by-step explanation:

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3 years ago

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Tom,Scott and dawn sold cookies at the school fair.

aleksklad [387]

First of all work out how many tom and scott sold.
tom sold 60% of 90 cookies which is 54.
scott sold 2/3 of 150 cookies which is 100.
altogether the three of them sold 54+100+46 cookies which is 200.
Dawn sold 46 of these 200 cookies. To work out the percentage we have both the numbers to get 23 out of 100. We halved those numbers because a percentage is out of 100 we halved it to get it out of 100.
so 23 out of 100 is 23% so dawn sold 23%of the cookies.

Hope this helps :)

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3 years ago

Find Horizontal and Vertical asymptotes for y=(x^2 -9)/(4x^2 +1)

Gnom [1K]

Answer: Horizontal asymptote is $\dfrac{1}{4}$ and vertical asymptotes are $\pm \dfrac{1}{2i}$

Step-by-step explanation:

Since we have given that

$y=\dfrac{x^2-9}{4x^2+1}$

We need to find the horizontal and vertical asymptotes.

Since vertical asymptotes will occur where the denominator becomes zero.

So, here denominator is $4x^2+1$

Now,

$4x^2+1=0\\\\4x^2=-1\\\\x^2=\dfrac{-1}{4}\\\\x=\pm \dfrac{1}{2i}$

And the horizontal asympototes will occur when the coefficient of higher degree of numerator is divided by coefficient of higher degree of denominator.

$y=\dfrac{1}{4}$

Hence, horizontal asymptote is $\dfrac{1}{4}$ and vertical asymptotes are $\pm \dfrac{1}{2i}$

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3 years ago

Find the solution of the system of equations. 7x -- 8y = -237x – 7y = -14(?,?)​

Find the solution of the system of equations. 7x -- 8y = -237x – 7y = -14(?,?)