Answer:
<h2>(-3,-6)</h2>
Step-by-step explanation:
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It would take 25 years for Birr 500 to quadruple if invested at a rate of 12% simple interest per annum.
<h3 /><h3>Simple interest formula</h3>
Using the simple interest formula A = P(1 + rt) where
- P = princial amount = Birr 500,
- A = final amount = 4P (since it is quadrupled),
- r = rate = 12% = 12/100 = 0.12 and
- t = time to quadruple
<h3 /><h3>Finding the time it takes to quadruple </h3>
Since we require t, making t subject of the formula, we have
t = [(A/P) - 1]/r
Substituting the values of the variables into the equation, we have
t = [(A/P) - 1]/r
t = [(4P/P) - 1]/0.12
t = [4 - 1]/0.12
t = 3/0.12
t = 25 years
So, it would take 25 years for Birr 500 to quadruple if invested at a rate of 12% simple interest per annum.
Learn more about simple interest here:
brainly.com/question/25793394
Answer:
associative property
Step-by-step explanation:
Grouping like this
a + (b + c) = (a + b) + c
or
a(bc) = (ab)c
is the associative property
Side of base of square, a = 10 km.
Height of pyramid , h = 12 km.
Volume of pyramid is given by :
Surface area is given by :
Therefore, volume and surface area are 400 km³ and 340 km² respectively.
Hence, this is the required solution.
