Answer:
Brionny invested £8400.
Step-by-step explanation:
Simple Interest
This is a simple interest problem.
The simple interest formula is given by:
In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
After t years, the total amount of money is:
In this question:
We divide in two intervals, the first year and the second year. We have to know that the amount after the end of the first year is the principal at the start of the second year.
First year:
Amount of 2% interest, during 1 year.
So the interest earned is:
The total amount at the end of the first year is:
Second year:
We have that:
The interest earned is of:
The total amount is:
After two years, the investment is worth £8653.68 How much did Briony invest?
So
Brionny invested £8400.
9514 1404 393
Answer:
a = 3
Step-by-step explanation:
Evaluating the given function at the point, we have ...
f(-1) = a(-1)^2 +1 = 4
a +1 = 4
a = 3
The value of 'a' is 3.
Answer:
6 schools
Step-by-step explanation:
I did the same assignment
Answer:
x=8
Step-by-step explanation:
First set the equations equal to each other
8x+36=5x+60
Subtract 36 from both sides
8x+36-36=5x+60-36
Simplify
8x=5x+24
Subtract 5x from both sides
8x-5x=5x+24-5x
Simplify
3x=24
Divide both sides by 3
3x/3=24/3
Simplify
x=8
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