Answer:
96.1826
Step-by-step explanation:
to make that decimal numbers in 4 decimal places, then you count the number at the right hand side after the point, when u get to the 4th digit, you stop, then if the 5th digit is more than 4, they you add 1 to the 4th digit and there u have 96.1826
The area will be:
A=x(25-x)
A=25x-x^2
For the area to be maximize the rate of change of area will be zero, or dA/dx=0
dA/dx=25-2x
25-2x=0
2x=25
x=12.5
So the dimensions will be 12.5 and (25-12.5)=12.5. Thus the greatest area possible with 50 foot of fencing is a square with sides of 12.5 feet.
(A square always results in the greatest possible area for a rectangular plane for a given amount of material...so in general, all such problems will result with dimensions of a square with sides equal to the material divided by four.)
Let's say x to the daughter's age, since the father's age is four times the daughter's age, his age will be 4x. 18 years later, the daughter's age will be x+18 and the father's will be 4x+18. And we know that 18 years later the father's age will be twice the daughter' so , 4x+18 = 2(x+18) and 4x+18=2x+36 then, 4x-2x=36-18,
2x=18 then divide both sides by 2, x = 9. The daughter's age was x, so she is 9 years old.
$10.50
Round to $70
10% Of 70= $7
5% of 70 = $3.50
So, 15% = $10.50