lexinerd
lexinerd
22-06-2014
Mathematics
contestada
Solve for x. 10x^2=29x-21 does anyone know this
Respuesta :
konrad509
konrad509
22-06-2014
[tex] 10x^2=29x-21 \\ 10x^2-29x+21=0\\ \Delta=(-29)^2-4\cdot10\cdot21=841-840=1\\ \sqrt{\Delta}=\sqrt1=1\\ x_1=\frac{-(-29)-1}{2\cdot10}=\frac{28}{20}=\frac{7}{5}\\ x_2=\frac{-(-29)+1}{2\cdot10}=\frac{30}{20}=\frac{3}{2}\\[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 76+ )
Otras preguntas
What does perserved mean
Vertex of f(x)=0.25|x-3|
radiation from the earths surface is ________.
which of the following is a carboxylic acid?
what’s the bladder wall made up of?
Group 1A has an oxidation number of _________________ the name of this group is______________________________.
I need help can someone help me pls
Use the drop-down menus to answer the questions, What conclusion does Dowell draw based on the evidence? -the mother never left her daughters room -the mother c
If you are allergic to pollen, you may develop cold-like symptoms when the plants that bother you are in bloom. Those symptoms may include sneezing, coughing, c
if post are spaced 10 feet apart for a straight-line fence of 100 feet,then you would need how many post to hang the fence?
