Equation required for this question:
an • 1.072^n = 14,580
Where a = payment every half year and n = number of half years
There are 12 half years in 6 years.
Therefore n = 12, substitute this.
12a • 1.072^12 = 14,580
12a = 14,580 / 1.072^12
12a = 6,330~
a = 527.5 ~
you can put both sides of the equation to the 4th power
![( \sqrt[4]{d - 15}) ^{4} = (2)^{4}](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B4%5D%7Bd%20-%2015%7D%29%20%5E%7B4%7D%20%20%20%3D%20%282%29%5E%7B4%7D%20)


5 times (-17)= -85 so you should have said -85
Answer:
12:7
Step-by-step explanation:
you want to set the fractions equal in the denominators:
4/5 x 3= 12/15
you end up with the ratio between 12/15 and 7/15 and you'd get 12 to 7