a.4
b.18
c.12
d.9
Answer:
Expression used to convert 22 Australian Dollar to US Dollar is
Step-by-step explanation:
Given:
22 Australian Dollars.
To Do: Expression which can be used to convert Australian dollar to Us dollar.
Let, x be the number of Australian Dollars and y be the US Dollars.
We know that 1.2 Australian Dollar equal to 1 US Dollar.
⇒ 1 Australian Dollar = US Dollar
So, x Australian Dollar = US Dollar
Thus, Expression that can be used to convert Australian Dollar into US Dollar is given by,
So. 22 Australian Dollar
put x = 22
US Dollars
Therefore, Expression used to convert 22 Australian Dollar to US Dollar is
32 + 0.25y + 2.50x < 50
That's just my guess. I'm not 100% sure.
Answer:
Interest rate is 1.728%
Step-by-step explanation:
Here, we are interested in calculating the monthly interest rate on an account.
Mathematically;
The compound interest formula amount is given as;
A = P( 1 + r/n)^nt
where A is the amount at the end of the compounding = $2,134.96
P is the principal which is the amount deposited = $1,327.35
r is the rate which we want to calculate
n is the number of times per year it is compounded = (2 * 12) = 24 ( twice monthly)
t is the number of years = 12
2,134.96 = 1327.35( 1 + r/24)^(24 * 12)
divide both sides by 1327.35
1.608 = (1 + r/24)^288
Take the ln of both sides
ln 1.608 = ln ( 1 + r/24)^288
ln 1.608 = 288 ln (1 + r/24)
0.21 = 288 ln ( 1 + r/24)
Divide both sides by 288
0.00072 = ln (1 + r/24)
1.000716527571 = 1 + r/24
r/24 = 0.00072
r = 24 * 0.00072
r = 0.01728
which is same as 1.728%