He lived 9 months in Portugal and 5 months in Brazil. This is because 130*9 + 150*5 = 1920.
Cross multiply. 2 times 42= 7x
84/7= 12
X= 12
Math will help you get a degree and you will raise a family with more money- afford a house— and pay your taxes.
~Shoto Todoroki here~
Let's consider what we are asked. The domain is defined as a set of points that satisfy the equation on the x-ordinate.
So, essentially, we need to find if and what the restriction on x is.
Let's now consider just f(x) because g(x) is completely irrelevant to the question.
f(x) = 2 - x^(1/2)
Since f(x) can never be 0 for a defined function, let's consider when f(x) = 0 to find a restriction on x.
2 - x^(1/2) = 0
2 = x^(1/2)
+-4 = x
But we can only take the positive 4 because inside a square root has to always be positive (unless you're dealing with complex numbers), so the only restriction is that x cannot be equal to 4.
<h2>Therefore, our domain is:<u><em> x >= 0; x =/= 4</em></u></h2>
hope this helps :D
