<span>We want to show that f(g(x)) = x and g(f(x)) = x.
So to do that, we need to calculate f(g(x)) and g(f(x)) explicitly.
Let's begin with f(g(x))
Now, f(g(x)) = f(4/x), by definition of g, as g(x) = 4/x
What then is f(4/x) equal to? Use the definition of f.</span>
Answer:
<em>x = 12</em>
Solve for x:
<em>Using Pythagorean Theorem </em>
a^2 + b^2 = c^2
a = 9
c = 15
b = x
9^2 + x^2 = 15^2
81 + x^2 = 225
x^2 = 144 | sqrt
x = 12
Answer:
Deandre runs 4 miles in 30 minutes
Deandre runs 1 mile in 30/4 minutes=7.5minutes
Deandre runs 4x7.5 miles in 48 minutes
=30miles
Step-by-step explanation:
Fist we find the legnth of the diagonal
a^2+b^2=c^2
3^2+4^2=c^2
9+16=c^2
25=c^2
c=5
now the other diagonal
11^2+5^2=c^2
121+25=c^2
146=c^2
sqrt both sides12.083
closest is B
Hi there!
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I believe your answer is:
(-2, 0)
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Here’s why:
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Hope this helps you. I apologize if it’s incorrect.