3 years ago

Determine the standard form of the equation for the circle with center (h,k)= (0,-2) and radius r=9

Mathematics

1 answer:

gladu [14]3 years ago

5 0

Use the std eqn of a circle with center at (h,k) and radius r:

(x-0)^2 + (y+2)^2 = 9^2, or just x^2 + (y+2)^2 = 9^2.

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svlad2 [7]

Answer:

x- 7.50 i think i hope i helped

Step-by-step explanation: there no explanation

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2 years ago

NEED HELP ASAP ON GEOMETRY!! ONLY 3 QUESTIONS ATTACHED WITH PHOTOS. THANK YOU

ankoles [38]

3. Look at the picture.

Use Pythagorean theorem:

$x^2=3.6^2+5.5^2\\\\x^2=12.96+30.25\\\\x^2=43.21\to x=\sqrt{43.21}\\\\\boxed{x\approx6.6}$

4.
Use Pythagorean theorem:

$3^2+\left(\dfrac{x}{2}\right)^2=6.5^2\\\\9+\dfrac{x^2}{4}=42.25\ \ \ |-9\\\\\dfrac{x^2}{4}=33.25\ \ \ \ |\cdot4\\\\x^2=133\to x=\sqrt{133}\\\\\boxed{x\approx11.5}$

5.
$\widehat{AB}\ \cong\ \widehat{DE}$