Answer:
Step-by-step explanation:
2(x+y)=parameter
xy=area
If area=parameter then 2(x+y)=xy.
If y=3, then
2(x+3)=3x
2x+6=3x
X=6
now, let’s double check.
6*3=18
2(3+6)=18
1/2 = 3/6
Each children got 1/6
3/6 - 1/6x = 0
3/6 = 1/6x
X = 3, she has 3 children
Answer:
$6370
Explanation:
The simple interest formula gives us the final amount A given the principal amount P:

where r is the interest rate and t is the time interval.
Now in our case we have
P = 2800
r = 4.25/100
t = 30 years
therefore, the above formula gives

which simplifies to give

Hence, the account balance after 30 years will be $6370.