If the numerator of a fraction is increased by 140% and the denominator of the fraction is decreased by 20%, the resultant fraction is 12/7. Find the original fraction.
\(\frac{4}{9}\)
\(\frac{4}{7}\)
\(\frac{}{6}\)
\(\frac{8}{9}\)
If (a + b + c) = 7 and ab + bc + ca = 12, find the value of a2 + b2 + c2
If in triangle ABC, MN is paralle to BC, and M and N are points on AB and AC respectively. The area of quadrilateral MBCN = 130cm2. If AN:NC = 4:5, then the area of triangle MAN is:
If a + b + c = 0 and ab + bc + ca = -11, then what is the value of a2 + b2 + c2 ?