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Igoryamba
3 years ago
10

Find the solutions of x^2+30 = 0 please give detailed steps!

Mathematics
1 answer:
murzikaleks [220]3 years ago
6 0

Answer:

x= <em>i</em>√30

Step-by-step explanation:

<u>I'm going to go into this under the assumption that you've covered imaginary numbers based on the </u><u>question.</u><u> If I'm wrong then sorry about that.</u>

Okay, so first you want to subtract 30 from both sides

x^2=-30

Then you take the square root of each side.

√(x^2)=√-30

x=√-30

Since it's impossible to square a number to get a negative number, you'll end up with an imaginary number. You have to rewrite x=√-30 to get rid of the negative sign under the radical. Rewriting this will also indicate that it's an imaginary number.

<u>Final</u><u> </u><u>answer</u><u>:</u><u> </u><u>x</u><u> </u><u>=</u><u> </u><u>i√30</u>

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Do you want to $140 to your friend he pays you back $270 what interest rate did you charge your friend
ExtremeBDS [4]

Answer:

the interest rate is 92.86%

Step-by-step explanation:

270-140= 130

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3 0
3 years ago
Consider the multivariable function f\left(x,y,z\right)=\frac{x^3-2.5y^2+\frac{z}{2}}{z\left(x-y\right)}f ( x , y , z ) = x 3 −
Lelu [443]

Answer:

f\left(2,3,1\right)=\bold{14}

Step-by-step explanation:

Given the function:

f\left(x,y,z\right)=\frac{x^3-2.5y^2+\frac{z}{2}}{z\left(x-y\right)}

To find:

The value of f(2, 3, 1) = ?

Solution:

f(2, 3, 1) means the values of x, y\ and\ z as:

x=2\\y=3\\z=1

Let us put the given values in the given function and let us solve for it:

\Rightarrow f\left(2,3,1\right)=\dfrac{2^3-2.5\times 3^2+\frac{1}{2}}{1\left(2-3\right)}\\\\\Rightarrow f\left(2,3,1\right)=\dfrac{8-2.5\times 9+0.5}{1\left(-1\right)}\\\\\Rightarrow f\left(2,3,1\right)=\dfrac{8-22.5+0.5}{-1}\\\\\Rightarrow f\left(2,3,1\right)=\dfrac{-14}{-1}\\\\\Rightarrow f\left(2,3,1\right)=\bold{14}

Therefore, the answer is:

f\left(2,3,1\right)=\bold{14}

8 0
2 years ago
5 points
ruslelena [56]

Answer:

Angle = 54

Step-by-step explanation:

Given

Kano = 45;

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Ondo = 126;

Oyo = 154

Total Distribution = 840

Required

Determine the angle subtended by Ondo (in a pie chart)

The general formula to calculate subtended angle in a Pie chart is;

Angle = 360 * \frac{Frequency}{Total\ Frequency}

In this case of Ondo

Frequency = 126

Total Frequency = Total Distribution = 840

Substitute these values in the given formula;

Angle = 360 * \frac{126}{840}

Angle = \frac{360 *126}{840}

Angle = \frac{45360}{840}

Angle = 54

<em>Hence, the angle subtended by Ondo is 54</em>

8 0
3 years ago
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100 yd ^2
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