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:
Step-by-step explanation:
Use the distibutivve property to multiply -6 by 1.4 - r
Then move over 6r to the front
The formula is 4/3πr^3
4/3 (3.14)(3)^3
answer: 113.09
Answer:
There are many lines with slopes of 2. When writing them, they simply need to be y = 2x + b, with which b can be any number.
Step-by-step explanation:
We know this because slope intercept form is y = mx + b, in which m is the slope of the equation.
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