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Marina CMI [18]
3 years ago
12

..................................................2

Mathematics
1 answer:
Semmy [17]3 years ago
8 0

Step-by-step explanation:

Given

for first circle, center is at (3,2) and radius is 2 units

General equation of circle with center (h,k) and radius r units is given by

\Rightarrow (x-h)^2+(y-k)^2=r^2

for the given circle it is

\Rightarrow (x-3)^2+(y-2)^2=2^2\\\Rightarrow (x-3)^2+(y-2)^2=4

for second circle center is at (0,-1) and radius is 3 units

Equation is given by

\Rightarrow (x-0)^2+(y+1)^2=3^2\\\Rightarrow (x-0)^2+(y+1)^2=9

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Step-by-step explanation:

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Just multiply 3 by both of the numbers inside the parentheses and we get: 3u-15

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olga nikolaevna [1]

Good morning☕️

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Answer:

w is the width

L is the length

p is the perimeter

w=9

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Step-by-step explanation:

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⇔p=2[(3w-4) + (w+1)]

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4 years ago
SOLVE x^4 − 15x^2 − 16 = 0 <br> What are the roots of the equation?
kakasveta [241]

Answer:

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This gets a bit tricky.

We have to substitude x^2 as u in this problem.

Now to rewrite x^4 − 15x^2 − 16 = 0 with u, we get

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<em>This is not the end of the problem. </em>

Now we have to substitute x^2 back to u.

x^2 = 16  --> we get the roots 4 and -4

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