Solve, using the Rule of 72 rate = 4%, years = 18, fv=$8,000. Solve for PV.
Formula:
PV = $1/(1+r) t
PV = $8000/(1+.04) 18
PV = $8000/2.0258
3949.03 = $8000/2.20258
Solve using the quadratic formula
Using algebra to solve this problem (12 + .25x = 30), the answer (x) is 72.
You cant solve it unless it is an equation. To be an equation it must have an equals sign.
You cannot solve one linear equation in two variables. You need two equations that are independent.
(2,-2)
Solve using the quadratic formula
Using algebra to solve this problem (12 + .25x = 30), the answer (x) is 72.
You cant solve it unless it is an equation. To be an equation it must have an equals sign.
a2+30a+56=0 , solve for a Using the quadratic formula, you will find that: a=-2 , a=-28
You cannot solve one linear equation in two variables. You need two equations that are independent.
8840-026
We can solve the mystery.
the answer
(2,-2)
Solve the problem using the + sign for the variable. Then solve the problem using the - sign for the variable. Report your answer as the answer that you got using + or the answer that you got using -.
Since the second equation is already solved for "y", you can replace "y" by "9" in the other equation. Then solve the new equation for "x".
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