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4 years ago

If it is possible... What two numbers added is 4 and multiplied to be 7?

2 answers:

7 0

There are no real numbers that can do that.

If you were to go far enough in high school math, you'd learn
about something called "imaginary" numbers. Using those, the
two numbers that add to 4 and multiply to 7 are

2 + 3.464 i
and
2 - 3.464 i .

The little ' i ' is the unit of imaginary numbers . . . the square root of -1 .

You won't ever get that far, since you already hate math
and you want everybody to know it.

borishaifa [10]4 years ago

7 0

Answer:

There are no real numbers that can do that.

If you were to go far enough in high school math, you'd learn

about something called "imaginary" numbers. Using those, the

two numbers that add to 4 and multiply to 7 are

2 + 3.464i

and

2 - 3.464 i .

The little ' i ' is the unit of imaginary numbers . . . the square root of -1 .

You won't ever get that far, since you already hate math

and you want everybody to know it.

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3 years ago

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3 years ago

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What is 45,234*864,343

Katen [24]

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3 years ago

SAT scores have a mean of 1026 and a standard deviation of 209. ACT scores have a mean of 20.8 and a standard deviation of 4.8.

Y_Kistochka [10]

Answer:

The z-score for SAT exam of junior is much small than his ACT score. This means he performed well in his ACT exam and performed poor in his SAT exam.

Step-by-step explanation:

Mean SAT scores = 1026

Standard Deviation = 209

Mean ACT score = 20.8

Standard Deviation = 4.8

We are given SAT and ACT scores of a student and we have to compare them. We cannot compare them directly so we have to Normalize them i.e. convert them into such a form that we can compare the numbers in a meaningful manner. The best way out is to convert both the values into their equivalent z-scores and then do the comparison. Comparison of equivalent z-scores will tell us which score is higher and which is lower.

The formula to calculate the z-score is:

$z=\frac{x-\mu}{\sigma}$

Here, μ is the mean and σ is the standard deviation. x is the value we want to convert to z score.

z-score for junior scoring 860 in SAT exam will be:

$z=\frac{860-1026}{209}=-7.59$

z-score for junior scoring 16 in ACT exam will be:

$z=\frac{16-20.8}{4.8}=-1$

The z-score for SAT exam of junior is much small than his ACT score. This means he performed well in his ACT exam and performed poor in his SAT exam.

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3 years ago

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I hope this helps you feel free to contact me

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3 years ago