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Mathematics 19 Online
OpenStudy (vera_ewing):

Two geometry questions?

OpenStudy (vera_ewing):

OpenStudy (vera_ewing):

@mathstudent55 this one...

OpenStudy (vera_ewing):

@aum

OpenStudy (mathstudent55):

Theorem: If two chords intersect in a circle, the product of the lengths of the segments of one chord equals the product of the segments of the other. |dw:1405060234850:dw|

OpenStudy (mathstudent55):

That means ab = cd

OpenStudy (vera_ewing):

ok so XY=VW?

OpenStudy (mathstudent55):

Let's see. I need to draw your problem.

OpenStudy (vera_ewing):

ok and when you're done let me know if the equation would be (4-n)(4)=(4)(n) ok?

OpenStudy (mathstudent55):

|dw:1405060363413:dw|

OpenStudy (mathstudent55):

Yes, your equation is correct.

OpenStudy (mathstudent55):

Now you need to solve it for n.

OpenStudy (vera_ewing):

i got n=2

OpenStudy (mathstudent55):

(4-n)(4)=(4)(n) 16 - 4n = 4n 16 = 8n 2 = n n = 2 You are correct again.

OpenStudy (vera_ewing):

awesome! now just that pizza question and i'm done with school!!! :D

OpenStudy (vera_ewing):

Marcus ordered a 12-inch diameter pizza. It came cut into 12 equal slices. Since Marcus does not like pizza crust, he cuts off the end of each slice. Assume he makes a straight cut, as shown. For one slice of pizza, what is the area of the crust Marcus cuts off? Give your answer to the nearest tenth.

OpenStudy (mathstudent55):

Wait, you're making me hungry. I'm going to order a pizza for after the problem.

OpenStudy (vera_ewing):

lol i wish i could do that too! ;)

OpenStudy (mathstudent55):

|dw:1405060638111:dw|

OpenStudy (mathstudent55):

Let's look at one slice.

OpenStudy (vera_ewing):

ok...

OpenStudy (mathstudent55):

|dw:1405060715195:dw|

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