Answer:
They can be expressed as fractions. > web's answer a rational number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.
Step-by-step explanation:
You get extraneous solutions anytime the radical becomes undefined under the set of real numbers. for example

does not exsist since the radical cannot be used on a negative number
Answer:
The student did not divide 5 into 25 but subtracted 25 from both sides. It looks like the student then moved the -5 over to the other side somehow.
Answer:
P(20000<x<50000)
Step-by-step explanation:
Given that f(x) is a probability density function for the lifetime of a manufacturer's highest quality car tire, where x is measured in miles.
We have to explain the meaning of integral
20000 to 50000 f(x) dx
= 
where F is the cumulative function.
Hence the integral is the probability that x lies between 20000 and 50000
Hence the integral is nothing but
