Answer:
Step-by-step explanation:
we have
Equate to zero
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
Remember that
its b on edge
a.
by elimanation,cimparison or substitution you wull get the value of x=-60/17 and y=6/17
47.13cm
2×3.142×7.5cm
Answer: 440 dollars