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Papessa [141]
3 years ago
14

3(x−7)+20=12+2(x−3). Pls help quickly

Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0

Step-by-step explanation:

3x-21+20=12+2x-6

3x-1= 6+2x

3x-2x=6+1

x=7

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What are the answers for 7 and 8??? please help
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Answer:

7.)

Therefore FT is 33 unit.

8.)

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Step-by-step explanation:

7.)

Given:

ΔFUT ~ ΔFHG

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Solution:

ΔFUT ~ ΔFHG  ............Given

If two triangles are similar then their sides are in proportion.  

\dfrac{FU}{FH} =\dfrac{FT}{FG} \textrm{corresponding sides of similar triangles are in proportion}\\

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\dfrac{39}{130} =\dfrac{FT}{110}\\\\FT=\dfrac{110\times 39}{130}=33\\FT=33\ unit  

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8.)

Given:

ΔSTU ~ ΔFED

ST= 63

FE = 9

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SU = ?

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ΔSTU ~ ΔFED  ............Given

If two triangles are similar then their sides are in proportion.  

\dfrac{ST}{FE} =\dfrac{SU}{FD} \textrm{corresponding sides of similar triangles are in proportion}\\

Substituting the values we get

\dfrac{63}{9} =\dfrac{SU}{14}\\\\SU=\dfrac{882}{9}=98\\\\SU=98\ unit

Therefore SU is 98 unit.

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