Answer:
x=-3
|-x| = 3
|x| = 3
Step-by-step explanation:
we know that
If a number is a solution of a equation, then the number must satisfy the equation
<em>Verify each case</em>
case 1) we have
x=3
substitute the value of x=-3
-3=3 -----> is not true
therefore
x=-3 is not a solution of the given equation
case 2) we have
x=-3
substitute the value of x=-3
-3=-3 -----> is true
therefore
x=-3 is a solution of the given equation
case 3) we have
|-x| = 3
substitute the value of x=-3
|-(-3)| = 3
|3| = 3
3=3-----> is true
therefore
x=-3 is a solution of the given equation
case 4) we have
|x| = 3
substitute the value of x=-3
|(-3)| = 3
3=3-----> is true
therefore
x=-3 is a solution of the given equation
case 5) we have
-|x| = 3
substitute the value of x=-3
-|(-3)| = 3
-3=3-----> is not true
therefore
x=-3 is not a solution of the given equation
Answer:
1/25
Step-by-step explanation:
substitute -2 where there are x
f(x) = 5^x
f(-2) = 5^(-2)
f(-2) = 1/(5^2)
f(-2) = 1/25
Answer:
4 miles per gallon of fuel.
Step-by-step explanation:
The fuel efficiency of a car is given by the ratio of distance traveled by car to the volume of fuel used.
Now, given that Nate's car will go 20 miles on 5 gallons of fuel.
Therefore, the fuel efficiency of Nate's car will be given by the ratio
= 
= 
= 4 miles per gallon of fuel. (Answer)
Answer:
5x+3=2x+21
Step-by-step explanation:
is that what you were looking for?
Answer:
no Luke is not correct.
Step-by-step explanation:
