Answer:
Step-by-step explanation:
D
Answer:
31,250 ft²
Step-by-step explanation:
Let x represent the length of fence parallel to the river. Then the ends of the rectangle will have dimesion (500-x)/2, and the total area will be ...
... A = x(500-x)/2
This function describes a parabola with zeros at x=0 and x=500. The vertex (maximum) will be located halfway between these, at x=250.
The maximum size pen has area ...
... A = 250(500 -250)/2 = 31,250 . . . . sq ft
The statement is False.
For this, it is enough to show a case in which the subtraction of two positive numbers is negative.
For this, we must choose two numbers.
Suppose we want to subtract the following numbers:
Number 1: 5
Number 2: 10
Subtracting both numbers we have:
We observe that the result is negative. Therefore, the given conclusion is false.
Answer:
Counterexample:
The acceptable first step in simplifying the expression is (a)
The expression is given as:
To change the form of the expression, we simply perform several arithmetic operations on it.
Start by multiplying the expression by 1/1
Express 1 /1 as (1 - sec x)/(1 - sec x)
Rewrite the above expression as follows:
Hence, the acceptable first step is (a)
Read more about trigonometry ratios at:
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