Answer:
B: 6 miles
Step-by-step explanation:
You divide 18 by 3 and get 6.
Using a system of equations, it is found that Wilma is 50 years old and Yvonne is 10 years old.
<h3>What is a system of equations?</h3>
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the variables are given as follows:
- Variable y: Yvonne's age.
Wilma is 5 times as old as yvonne, hence:
x = 5y.
In ten years, yvonne's age will be a third of wilma's age, hence:

Since x = 5y:


3y + 30 = 5y + 10
2y = 20.
y = 10.
Then:
x = 5y = 5 x 10 = 50.
Wilma is 50 years old and Yvonne is 10 years old.
More can be learned about a system of equations at brainly.com/question/24342899
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Answer:
You are correct. The answer is 
Step-by-step explanation:
First, we need to plug in our x value to the derviative's equation to find the slope of the line tangent to the graph, f

Now that we have found the slope and have a given point: (-1,6) we can use the point slope formula to find the equation of the line tangent to the graph f.

Answer:
90
Solution:
The 1st choice is 1 of 10.
The 2nd is one of 9.
Therefore, 10 times 9= 90