Answer:
225 m²
Step-by-step explanation:
If W is the width of the rectangle, and L is the length, then:
60 = 2W + 2L
A = WL
Use the first equation to solve for one of the variables:
30 = W + L
L = 30 − W
Substitute into the second equation:
A = W (30 − W)
A = 30W − W²
This is a parabola, so we can find the vertex using the formula x = -b/(2a).
W = -30 / (2 × -1)
W = 15
Or, we can use calculus:
dA/dW = 30 − 2W
0 = 30 − 2W
W = 15
Solving for L:
L = 30 − W
L = 15
So the maximum area is:
A = WL
A = (15)(15)
A = 225
Answer:
-20...........................
Answer:
I think it’s 7/24’s I looked it up on Quora
Step-by-step explanation:
Yes! The lengths of each side must be less than the sum of the other two lengths. It looks like this:
4+4>7
7+4>4
4+7>4
Answer:
Step-by-step explanation:
Here we need to find the x for the given equation so we can use the concept of the quadratic formula to solve .
comparing the given equation with an standard quadratic equation we get
a=1
b=6
c=3
so applying the quadratic formula we get
which can be further simplified to get
x=-5.45 or x=-0.55
so correct option is <em>A</em>
