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3 years ago

Solve the equation using square roots x^2+20=4

Mathematics

1 answer:

Rudik [331]3 years ago

5 0

Answer:

Step-by-step explanation:

x^2+20=4 first isolate the variable by subtracting 20 on both sides.

x^2=-16 again isolate the variable but this time you square root both sides.

$\sqrt{x}^2$ = $\sqrt{-16$ then simplify

x= ±4

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yaroslaw [1]

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avanturin [10]

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aev [14]

Answer:

Step-by-step explanation:

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3 years ago

Suppose a circle with center (14, 9) passes through point (16, 12). Which equation represents the circle?

kumpel [21]

Answer:

The equation that represents the circle is $(x-14)^{2}$ + $(y-9)^{2}$ = 13

Step-by-step explanation:

Given the center of circle (14,9) passes through point (16,12)

We know that the equation of circle is

$(x-h)^{2}$ + $(y-k)^{2}$ = $r^{2}$

where (x,y) is any point on the circle, (h,k) is center of the circle and r is radius of circle.

From given data (x,y) is (16,12) and (h,k) is (14,9). Substituting these values in equation of circle, we get

$(16-14)^{2}$ + $(12-9)^{2}$ = $r^{2}$

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3 years ago

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Mandarinka [93]

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