At the end of a snow storm, Allison saw there was a lot of snow on her front lawn. The temperature increased and the snow began to melt at a steady rate. After the storm, the snow started to melt at a rate of 0.75 inches per hour and is known that 4 hours after the storm ended, the depth of snow was down to 9inches. Write an equation for the function S(t),representing the depth of snow on Allison lawn, in inches, t hours after the snow stopped falling
x being nathan reading, it has to be at least (or equal to) 25 or greater.
factor out 3 from the expression
reduce the numbers with greatest common divisor 3
is there any attachment? what are the equations?
x=1 or x=-3
given equation is:
we have to find the value of x.
adding 2x to both sides of above equation,we get
ax²+bx+c=0 is general form of quadratic equation.
x= (-b±√b²-4ac)/2a is quadratic formula to find the value of x.
comparing eq(1) with general quadratic equation,we get
a=1 b=2 and c=-3
putting above values in quadratic formula,we get
x=-2+4/2 or x=-2-4/2
x=2/2 or x=-6/2
x=1 or x=-3 is solution of given equation.