Answer:
0.38 is a rational number because it can be expressed as fraction, and it isn't a repeating decimal.
Step-by-step explanation:
Repeating decimals aren't rational, and all rational numbers can be expressed as a fraction, or they aren't rational.
Answer:
32
Step-by-step explanation:
<h2>
<u>Answer:</u></h2>
Susan = x
Gina = 3x
Sum of their ages = 12
Susan's age = ?
We can see that,

Susan is <u>3</u><u> </u><u>years </u>old.
Given: f(x) = x² + 7
Let y = x² + 7
x = y² + 7 (since the inverse is reflected about the y = x line, the coordinates are interchangeable)
y² = x - 7
y = √(x - 7)
Thus, the inverse function f^(-1)x = √(x - 7)