Mathematics
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OpenStudy (mckenzieandjesus):
please help!(:
Find the value of x. Ill draw the figure in the comments.
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OpenStudy (mckenzieandjesus):
|dw:1433877355603:dw|
OpenStudy (mckenzieandjesus):
A. 3
B. 4
C. 6
D. 8
OpenStudy (sdfgsdfgs):
Er where is x in the diagram?
OpenStudy (mckenzieandjesus):
|dw:1433878260039:dw|
OpenStudy (mckenzieandjesus):
sorry i forgot that part
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OpenStudy (mckenzieandjesus):
which of the following must be true?
A.m<1>m2
B.m<1<m<2
C.m<1=m<2
D.m<1<m<2
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OpenStudy (mckenzieandjesus):
@sdfgsdfgs
OpenStudy (sdfgsdfgs):
1st prob 1st - u may want to repost the second one separately....
triangle ABE and ACD are similar so their sides should be in the same ratio ok?
OpenStudy (mckenzieandjesus):
ok and ok
OpenStudy (mckenzieandjesus):
so how would I solve it?
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OpenStudy (sdfgsdfgs):
What is the ratio of AB to AC?
OpenStudy (mckenzieandjesus):
60?
OpenStudy (sdfgsdfgs):
Not exactly - try this: what is length of AB and AC? Then divide AB/AC to find the ratio.
OpenStudy (mckenzieandjesus):
1?
OpenStudy (sdfgsdfgs):
What is length of AB?
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OpenStudy (mckenzieandjesus):
30
OpenStudy (sdfgsdfgs):
How about AC? From point A to point C
OpenStudy (mckenzieandjesus):
60
OpenStudy (sdfgsdfgs):
So AB/AC=?
OpenStudy (mckenzieandjesus):
would the answer be b?
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OpenStudy (mckenzieandjesus):
30/60= 1/2?
OpenStudy (sdfgsdfgs):
Nope, b is not the right ans sorry!
OpenStudy (sdfgsdfgs):
Correct - 1/2 is right
now because the triangles are similar,
BE/CD=AB/AC
OpenStudy (mckenzieandjesus):
so 1/2=1/2?
OpenStudy (sdfgsdfgs):
What are length of BE and CD?
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OpenStudy (mckenzieandjesus):
60?
OpenStudy (mckenzieandjesus):
wait cd is 48
OpenStudy (sdfgsdfgs):
No, length between point B and E?
Yes, CD is 48
OpenStudy (mckenzieandjesus):
im confused of how to figure that out..
OpenStudy (sdfgsdfgs):
Read your picture plz - the length is shown as what you are trying to solve here
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OpenStudy (mckenzieandjesus):
3x
OpenStudy (sdfgsdfgs):
put in the values of BE and CD and ratio of AB/AC in:
BE/CD = AB/AC
What will you get?
OpenStudy (mckenzieandjesus):
9/16?
OpenStudy (mckenzieandjesus):
do i do 3/48 and 30/60?
OpenStudy (sdfgsdfgs):
YES, you just missed the x there, it should be
3x / 48 = 30 / 60
Solve for x and you get the ans.
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OpenStudy (mckenzieandjesus):
30/60= 1/2 but how do i solve the other side?
OpenStudy (sdfgsdfgs):
3x / 48 =1/2
then multiply both sides by 48