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AleksAgata [21]
3 years ago
11

Solve the equation: 98= 3y -4. Please help, please dont put a random answer........ you dont want that to happen to you if you a

sk a question.......
Mathematics
2 answers:
AfilCa [17]3 years ago
8 0
The answer is y=34. Hope this helps ;)
8090 [49]3 years ago
4 0
You first want to leave your 3y alone so you have to move the -4 to the other side. The simplest way to get rid of it is to add 4 to each side. You now have 98+4=3y or 102=3y. You now wish to leave the y alone so you divide by 3. (102/3=3y/3) That should be equal to 34=x.
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Serjik [45]
I can’t understand why everyone complicates this question. It can be easily solved by similar triangles.


In this png, we have something to make sure.

∠B=∠DAB
∠
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=
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A
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(Yes, dab)

This also means AD=BD
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This is our basic construction of D, which is going to help us.

∠ADC=∠DAB+∠B=2∠B=∠CAB
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+
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∠
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∠CAD=∠CAB−∠DAB=∠B
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These are based on the fact that ∠A=2×∠B
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Actually these conditions suffice. Because I am just proving that △ACD∼△BCA
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Similarity makes us realize the following:

ACBC=ADAB
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A
B

and

ACBC=CDAC
A
C
B
C
=
C
D
A
C

So

AC×AB=BC×AD
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C
×
A
B
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C
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A
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and

AC2=BC×CD
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So

BC2=BC×(BD+CD)=BC×(AD+CD)
B
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×
(
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D
+
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D
)
=
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C
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(
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)

=AC×AB+AC2
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Q.E.D.
2.4k Views ·
6 0
2 years ago
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Answer:

Step-by-step explanation:

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Answer:

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