Answer: 800 feet²
Step-by-step explanation:
Lets remove the brackets from the function's expression
A(x) = -2x²+80x
So we got the quadratic function and we have to find the x that corresponds to function's maximum. Let it be X max
As we know Xmax= (X1+X2)/2 , where X1 and X2 are the roots of the function A(x)
Lets find X1 and X2
x(80-2x)=0
x1=0 80-2*X2=0
x2=40
So Xmax= (0+40)/2=20
So Amax= A(20)= 20*(80-2*20)=20*40=800 feet²
Answer:
The value of k is greater than or equal to 0, i.e. k≥7.
Step-by-step explanation:
The given equation is
The value of k must be a positive integer because k! is defined for k≥0, where k∈Z.
Subtract 48 from both the sides.
Using , we get
Divide both sides by 48k.
Note: The value of m can be 0 or 1.
The value of k is positive integer, so the right hand side of the above equation must be a positive integer.
Since RHS of the equation is positive integer, therefore (k-1)! is completely divisible by 48.
Add 1 on both sides.
Therefore the value of k is greater than or equal to 0.
Answer:
If your solving for x then its x=3 because you combine liked terms then divide both sides by 3.
I'm bad at explaining things, so I will show you an example.
Equation: 4t² = 25
1). Take the square root of both terms
√4t² = √25
√4t² = 4t
√25 = 5 (5x5 = 25)
Now, you are left with 4t = 5
Divide each side of that equation by 4
4t = 5
----- ----
4 4
t = 5/4 or -5/4
I don't know why, but the answer can be positive or negative. I'm still trying to understand that :)
I hope that this helps you a little bit!
Answer:
Solve y=x^2+2 for x.A.B.C.D
Step-by-step explanation: