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rusak2 [61]
3 years ago
7

Complete the steps to solve the -19x - 11=-144 ​

Mathematics
2 answers:
Inga [223]3 years ago
4 0

Step-by-step explanation:

-19x - 11 = -144

collect like terms,

-19x = -144 + 11

-19x = -133

Divide both sides by the coefficient of x

-19x/-19 = -133/-19

-19 cross with -19 leaving x, negative cross with negative leaving 133/19

133÷19

Therefore, x = 7

igomit [66]3 years ago
3 0
The correct answer is:X=7
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When the sum of 5 and three times a positive number is subtracted from the square of the number, 0 results. Find the number.
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x-the\ number\\\\x^2-(5+3x)=0\\\\x^2-5-3x=0\\\\x^2-3x-5=0

Use\ the\ quadratic\ formula:\\a^2x+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta > 0\ then\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\if\ \Delta=0\ then\ x_0=\dfrac{-b}{2a}\\\\if\ \Delta < 0\ then\ no\ solution

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Answer:\ \boxed{x=\dfrac{3+\sqrt{29}}{2}}
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