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irga5000 [103]
3 years ago
15

Help! Please! Thanks

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

Answer:

C. 3 (t+2)

Step-by-step explanation:

First, for the top fraction, simplify it:

4(t^2-4)/8=4(t+2)(t-2)/8

Now, flip the denominator and multiply the top and bottom fractions:

4(t+2)(t-2)/8 * 6/t-2

You can cancel the (t-2) terms so you get:

4(t+2) *6/8

Reduce the 6/8 to 3/4 so you get:

4(t+2)*3/4

Now cancel the 4's:

3(t+2)  Your answer is C.

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QUESTION 1

The given circle has equation:

x^2+y^2=16

We can rewrite to obtain;

(x-0)^2+(y-0)^2=4^2

This is equation is now in the form;

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

Where (h,k)=(0,0) is the center of the circle and r=4 is the radius.

QUESTION 2

The center of the circle is at (1,1) and passes through the point (4,5).

The radius of this circle is given by;

r=\sqrt{(4-1)^2+(5-1)^2}

r=\sqrt{(3)^2+(4)^2}

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r=\sqrt{25}

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We substitute into the formula;

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

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Expand if you wish;

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3 years ago
SOMEBODY HELP ILL MARK U BRAINLIEST <br> (Sorry the picture isn’t the best but it still works)
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The answers are:

a=60 degrees

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