2. Beginning with the equation 4x =6, write the new equation produced by multiplying both sides by 8.
1 answer:
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Solving for a gives us:
Step-by-step explanation:
Solving an equation for a variable means that we have to isolate the variable in the equation
Given equation is:
For isolating a, subtracting c from both sides
Subtracting b from both sides
Hence,
Solving for a gives us:
Keywords: Equation, formula
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A=future amount
P=present amount
r=rate in decimal
n=number of times per year compounded
t=time in years
how many years to double
basically
A=2P at t=?
so we can simplify and ignore the pricipal given and do
r=7%=0.07
n=2 (semiannualy means 2 times per year)
t=t
take the ln of both sides
divide both sides by ln1.035
times 2 both sides
use calculator
40.2976=t
nearest tenth
40.3
about 40.3 years