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3 years ago

7

Solve for this equation z^2-12z=-13

1 answer:

ASHA 777 [7]3 years ago

5 0

Answer:

$z=\sqrt{-1}$

Step-by-step explanation:

$z^2-12z=-13\\z^2-\frac{-12}{+12} =-13+12\\z^2=-1\\\sqrt{z^{2} } =\sqrt{-1}\\ z=\sqrt{-1}$

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What is the least common multiple (LCM) of 3 and 4?

Alexxx [7]

Answer:Least common multiple (LCM) of 3 and 4 is 12. Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor. Least Common Multiple of 3 and 4 with GCF Formula.

Step-by-step explanation:

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3 years ago

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Serggg [28]

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2 years ago

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grigory [225]

Answer:

8 < X < 12

Step-by-step explanation:

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2 years ago

I’m really confused I’ve already tried doing it on my own but kept getting the wrong answer

grin007 [14]

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3 years ago

The formula for the area of a circle is A equals xr2 this formula allows you to find the area of a circle if you know the radius

iVinArrow [24]

Answer:

The relation for the area of circle with radius , Diameter , circumference is

A= $\pi$ × radius²

A = $\frac{\pi D^{2} }{4}$

A = $\frac{c^{2} }{4\pi }$

Step-by-step explanation:

Given as :

The formula for the area of circle = $\pi$ × radius²

I.e A = $\pi$ × radius²

<u>Now If we know radius then </u>

Area calculated as A= $\pi$ × radius²

<u>If we know Diameter then</u>

Area calculated as $\pi$ × ( $\dfrac{\textrm Diameter}{2}$ )²

Or, A = $\pi$ × ( $\dfrac{\textrm D}{2}$ )²

I,e A = $\frac{\pi D^{2} }{4}$

<u>If we know the circumference then</u>

∵ circumference = c = 2 × $\pi$ × radius

or, c = 2 × $\pi$ × r

from here we calculate radius

I.e r = $\frac{c}{2\pi }$

And So , Area ( A ) = $\pi$ × radius²

I.e A = $\pi$ × ( $\frac{c}{2\pi }$ )²

Or, A = $\frac{c^{2} }{4\pi }$

Hence The relation for the area of circle with radius , Diameter , circumference is

A= $\pi$ × radius²

A = $\frac{\pi D^{2} }{4}$

A = $\frac{c^{2} }{4\pi }$ Answer

4 0

3 years ago