AnaBelle111
AnaBelle111
05-09-2017
Mathematics
contestada
Please find the value(s) of x.
Respuesta :
liemonder
liemonder
05-09-2017
-2x^2+50x+40=0
-2*(x^2-25x-20)=0
x^2-25x-20=0
complete square:
x^2-25x-20+156.25^2=0+156.25
x^2-25x+156.25^2=20+156.25
(x-12.5)^2=176.25
x-12.5=+/-sqrt(176.5)
x=12.5+/-sqrt(176.5)
Answer Link
VER TODAS LAS RESPUESTAS ( 14+ )
Otras preguntas
What Is the Function of Alliteration in Literature?
In a titration, 45.0 mL of KOH is neutralized by 75.0 mL of 0.30M HBr. How much KOH is in 1.0 liter of the KOH solution ?
Veronica earned $150 at work this past week in her paycheck. She wants to buy some necklaces which costs $6 each. She writes a function to model the amount of m
how did jazz demonstrate the independent spirit of the times?
What substance is made during transcription and where does it occur
The accompanying frequency table indicates the grades on the math midterm in Ms.Dennis' class. In which interval does the median of the date lie?
Write down a sensible metric unit for measuring A) the distance from London to Paris B) the amount of water in a swimming pool
Which sentence uses a verb that agrees with its subject?A.In a dark corner of the attic were many unopened boxes.B.Across the surface of the water glides swans.
In a titration, 45.0 mL of KOH is neutralized by 75.0 mL of 0.30M HBr. How much KOH is in 1.0 liter of the KOH solution ?
how do you write fraction 9/10 as a decimaland how to convert fractions into decimals
