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earnstyle [38]
2 years ago
6

Solve 5x^2-2=-12 by taking the square root

Mathematics
1 answer:
Nady [450]2 years ago
6 0

Answer:

x = \sqrt{-2} = 2i

Step-by-step explanation:

5x^2-2=-12

5x^2 =-10

x^2 =-2

x = \sqrt{-2} = 2i

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Find the area of the pentagon
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3 years ago
What is the equation for the points (-3,1) and (9,7)
Scorpion4ik [409]

Answer:

The equation of line with given points is 2Y - X - 5 = 0

Step-by-step explanation:

Given points are ( - 3 , 1)   and   (9 , 7)

Equation of line is y = mx +c

where m is the slop of line

Now m = \frac{y2 - y1}{x2 - x1}

Or,    m = \frac{7 - 1}{9 + 3}

so, slop = \frac{6}{12}

∴   slop = \frac{1}{2}

Now the equation of line with points ( -3 , 1) and slop m is :

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Or, 2Y - X - 5 = 0

Hence The equation of line with given points is 2Y - X - 5 = 0 Answer

6 0
3 years ago
Suppose that you are interested in determining the average height of a person in a large city. You begin by collecting the heigh
monitta

The standard error of the estimate of average height in the city is 0.25.

Given average height 64 inches, sample mean and sample standard deviation of 4 inches.

We have to determine the standard error of the estimate of the average height in the city.

Standard error is the error which is predicted before research to happen in research. It is calculated by dividing the standard deviation of the sample by the square root of the sample size.

n=256

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Standard error=s/\sqrt{n}

=4/\sqrt{256}

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Learn more about standard error at brainly.com/question/1191244

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2 years ago
The moon has a surface area of approximately 14,650,000 m^2. Estimate its radius to the nearest mile
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3 years ago
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