Mathematics
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OpenStudy (sagewilson):
If PA = 10 and BE = 21, find BP
4
25
46
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OpenStudy (sagewilson):
OpenStudy (anonymous):
what grade is this
OpenStudy (anonymous):
@SageWilson
OpenStudy (anonymous):
??? r u even here @SageWilson
OpenStudy (sagewilson):
yeah sorry I was looking over the othr queations. It's 10th grade geometry
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OpenStudy (sagewilson):
@ayanna1100 its 10th grade geometry
OpenStudy (anonymous):
ok so do you know what to do first
OpenStudy (sagewilson):
Not really, do you think you could explain what to do?
Directrix (directrix):
You'll need this theorem. Attached.
OpenStudy (anonymous):
@Directrix is correct I think the answer is either a or c
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OpenStudy (sagewilson):
So the formula would be 10 * (10 +21)?
OpenStudy (anonymous):
yes!! isn't that correct @Directrix
Directrix (directrix):
(PA) ^ 2 = BP * PE
10^2 = (21 + x)*x where x = PE
OpenStudy (anonymous):
yep that's it it was at the tip of my tongue you got it @SageWilson
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Directrix (directrix):
4 is not the answer
Directrix (directrix):
Find BP.
>> If PA = 10 and BE = 21, find BP
OpenStudy (anonymous):
ok so it has to be c
Directrix (directrix):
BP = BE + PE
OpenStudy (anonymous):
@SageWilson are you there
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OpenStudy (anonymous):
it is c. 46...... that's my best answer
OpenStudy (sagewilson):
Wouldn't PE be 10 as well? like PA
Directrix (directrix):
How did you get 46?
BP = BE + PE
BP = 21 + 4 = @SageWilson
OpenStudy (anonymous):
ya why
OpenStudy (anonymous):
she didn't I did it dosent make sence
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Directrix (directrix):
>>Wouldn't PE be 10 as well? like PA
No. There is no reason to assume that.
OpenStudy (anonymous):
*sense
OpenStudy (sagewilson):
OH okay, I read it wrong then. I thought you said 4 was the answer, so 4 was the the measurment of PE.
OpenStudy (anonymous):
ohhhhh I see sorry @SageWilson & @Directrix
OpenStudy (sagewilson):
not the answer to the problem
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Directrix (directrix):
I stated above the x = PE
To get BP, first find PE.
(PA) ^ 2 = BP * PE
10^2 = (21 + x)*x where x = PE