Please can you help me with this problems. Thanks

Mathematics

1 answer:

Slav-nsk [51]3 years ago

5 0

Last question a and b

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John wants to build a corral next to his barn. He has 300 feet of fencing to enclose three sides of his rectangular yard.

Mandarinka [93]

Let's first define the variables:
x = width
300 - 2x = long
The area will be:
A = (x) * (300 - 2x)
A = 300x - 2x²
We look for the maximum area, for this, we derive:
A '= 300 - 4x
We match zero:
0 = 300 - 4x
x = 300/4 = 75
Therefore, the width is:
x = 75 feet
The length is:
300 - 2x = 300 - 2 (75) = 300-150
150 feet
Answer:
Part A:
The maximum area will be:
A = (150) * (75) = 11250 square feet
Part B:
The dimensions are:
Length = 150 feet
width = 75 feet

3 0

3 years ago

X + 6 = 9<br><br> Solve the question.

vodomira [7]

3 because you have to take away 6 from both sides you have x=3 that is your answer 3

7 0

3 years ago

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The inches of rainfall in the rainforest is represented by the function f(x) = 3(x-2)+ 4. What is the average rate of change bet

nata0808 [166]

Answer:

The average rate of change of rainfall in the rainforest between 2nd year and 6th year = <u>3 inches</u>