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 ( 48+ )
Otras preguntas
- Stonehenge, a circle of large carved stones in England, was built more than 1,000 years ago. The circle of stones has a diameter of 108 feet. What is the circ
In a shop the total cost of two shirts and a trouser is Rs 3491.96 if the cost of a shirt is Rs 2006.99 less than the cost of trouser then what is the cost of a
What is 1+1? Is there a formula I need to use to figure this out?
100 points!!!!!!!!!! A community has an empty field ready for development and plans to place a playground in the center. A model of the plan for the project is
Brandy wants to buy a camera for $315. Suppose she saves $15 a week. How many weeks will it take to afford the camera? Write your answer as a equation with x as
100 points!!!!!!!!!!!!!!!!!!! The box plot shows the number of jumping jacks completed in a workout class by the class members. A box plot uses a number line fr
R2.00 per R100.00 withdrawal of R500
The concept of quality is brought about by strict and consistent commitment to certain standards that achieve uniformity of a product in order to satisfy specif
4. (x,y) → (x-3,4-y) is an example of a transformation called a glide reflection. Complete the table using the rule. (0.2) og (0.0) mont Does this glide reflect
Ken went to a country fair and spent $5 on admission, $6. 50 on games, and $7. 21 on food. If he had $30 before he went to the fair, how much money does he have
