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4 years ago

If the equation of a circle is (x + 4)2 + (y - 6)2 = 25, its center point is:

Mathematics

2 answers:

bulgar [2K]4 years ago

8 0

The center of the circle is the point (-4, 6).
The circle's radius is 5.

mixas84 [53]4 years ago

6 0

Center is (-4, 6)
radius is 5

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(cos x - (sqrt 2)/2)(sec x -1)=0

Darya [45]

$(\cos x-\frac{\sqrt{2}}{2})(\sec x-1)$ =0 [/tex]

$=(\cos x-\frac{1}{\sqrt{2}})(\sec x-1)$ =0 [/tex]

$\frac{(\sqrt{2}\cos x-1)}{\sqrt{2}}(\frac{1}{\cos x\ }-1)=0$

(Reciprocal Identity)

$(\frac{^{\sqrt{2}\\cos x-1}}{^{\sqrt{2}}})(\frac{1-\cos x}{\cos x})=0$

$\frac{^{(\sqrt{2}\cos x-1})}{\sqrt{2}}\frac{(1-\cos x)}{\cos x}=0$

$(\sqrt{2}\cos x-1}){(1-\cos x)}=0$ (ZeroProduct Property)

$\sqrt{2}\cos x-1=0$

$\sqrt{2}\cos x=1$

$\cos x=\frac{1}{\sqrt{2}}$

$x=\frac{\Pi }{4}$

and

$1-\cos x=0$

$\cos x=1$

$x=0$

x=0 and x= $\frac{\Pi }{4}$ are the solutions.

6 0

4 years ago

Read 2 more answers

Find the error and explain what there is incorrectly. Then, solve the problem correctly.

frez [133]

The problem is that 7^2 is 7*7, and the same for 8^2. The right answer is the square root of 15, or 3.87

3 0

3 years ago

Read 2 more answers

Can someone plz help me on this plz I have the answer just making sure I’m right. Plz no link s

aalyn [17]

What’s the answer you have currently

3 0

3 years ago

Read 2 more answers

samantha threw an apple out of a window from the tenth floor of her appartment building. the equation y = -16t^2+120 can be used

ella [17]

Answer:
time taken = 2.74 seconds

Explanation:
We are given that:
y = -16t² + 120 models the situation where:
y is the floor number
t is the time taken for the apple to hit the ground

We are also given that the floor number (y) is 10. Therefore, all we have to do is substitute with y in the above equation and solve for the time t as follows:
y = -16t² + 120
10 = -16t² + 120
120 - 10 = 16t²
110 = 16t²
t² = 110/16
t² = 6.875
either t = 2.74 seconds ..........> accepted
or t = -2.74 seconds .........> rejected as time cannot be in negative

Hope this helps :)

5 0

3 years ago

What is the name of this figure:

nika2105 [10]

Answer:

tringular prism

Step-by-step explanation:

there u go

4 0

3 years ago