The cosine ratio is the _____ side over the hypotenuse. adjacent opposite closest farthest The answer is adjacent.
Answer:
The equation can define y as a function of x and it also can define x as a function of y.
Step-by-step explanation:
A relation is a function if and only if each value in the domain is mapped into only one value in the range.
So, if we have:
f(x₀) = A
and, for the same input x₀:
f(x₀) = B
Then this is not a function, because it is mapping the element x₀ into two different outputs.
Now we want to see it:
x + y = 27
defines y as a function of x.
if we isolate y, we get:
y = f(x) = 27 - x
Now, this is a linear equation, so for each value of x we will find an unique correspondent value of y, so yes, this is a function.
Now we also want to check if:
x + y = 27
defines x as a function of y.
So now we need to isolate x to get:
x = f(y) = 27 - y
Again, this is a linear equation, there are no values of y such that f(y) has two different values. Then this is a function.
The statement written as a simplified mathematical expression is -18x
<h3>Writing mathematical expression</h3>
From the question, we are to write the given statement as a mathematical expression
The given expression is,
"<em>Nine times the product of a negative two and a number</em>"
Let the number be x
Thus,
The product of negative 2 and a number means
-2 × x = -2x
Then,
Nine times the product of a negative two and a number is
9 × -2x = -18x
Hence, the statement written as a simplified mathematical expression is -18x
Learn more on Writing mathematical expressions here: brainly.com/question/4344214
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Answer:
It should be 40%
Step-by-step explanation:
