39 miles ------------------------------------------------
Answer:
Step-by-step explanation:
Okay, so you need to create an equation which shows that twice the sum of a number (n) and 7 is 3 times that number. So you need twice the sum of n + 7 and that will equal 3 times n.
2(n + 7) = 3n
Now, multiply
2n + 14 = 3n
2n + 14 -2n = 3n - 2n
14 = n
So the number is 14. Now you can check your answer
2(14 + 7) = 3(14)
2x21 = 42
42 = 42
2x^2 • x^2 = 2x^4
First, multiply the terms with the same base by adding their exponents
2x^2+2
Then, add the numbers
2x^4
Answer:
when its a linear equation
Step-by-step explanation:
Answer:
Step-by-step explanation:
