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BlackZzzverrR [31]
3 years ago
13

The square root of 1 less than twice a number is equal to 2 less than the number.Find the number.

Mathematics
1 answer:
lesya [120]3 years ago
7 0
2x - 5 = 7x 
<span>x = -1
is your answer</span>
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Please help finals are tomorrow
Bogdan [553]
ΔQTR and ΔSTP are similar triangles. The corresponding sides of similar triangles are the same length.
TR = PT
TS = QT

Input the algebraic expression to make an equation system
PT = TR
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TS = QT
6x + 13 = 5y
6x - 5y = -13  <span><em>(second equation)</em>

</span>Using subtitution method, subtitute y with 2x - 1 from first equation into the second equation, to find the value of x
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6x - 5(2x - 1) = 13
6x - 10x + 5 = 13
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Find y with subtituting x with -2 in the first equation
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y = 2(-2) - 1
y = -4 - 1
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Answer:
x = -2
y = -5
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