Answer:
19 miles
Step-by-step explanation:
Let m represent the number of miles traveled. Then the delivery charge is ...
charge = $5.00 + $0.15·m
You want to find the value of m that makes the charge by $7.85, so you want the solution to ...
$7.85 = $5.00 +$0.15·m
$2.85 = $0.15·m . . . . . . . . . subtract $5 (this gives the mileage charge)
$2.85/$0.15 = m = 19 . . . . . divide by the coefficient of m
The number of miles traveled is 19.
The average rate of change is given by [f(b) - f(a)]/(b - a), where a and b represent the interval [a, b].
Let a = -2
Let b = -1
[(-1)^2 + 10 - ((-2)^2 + 10)]/(-1 -(-2))
[1 + 10 - (4 + 10)]/(-1 + 2)
[1 + 10 -4 -10]/(1)
[1 - 4]/(1)
-3/1
Answer: -3
Hi!
<u>Given these two equations:</u>
We want to solve using the substitution method. Knowing that x is equal to y + 8, we can simply plug in 'y + 8' in for x in the second equation, like so:
Combine like terms on both sides:
Subtract y from both sides:
Subtract 8 from both sides:
Now, we can simply plug the y value in to the first equation, and solve for x:
Simplify:
<h3>
Therefore, x is equal to 12 and y is equal to 4.</h3>
<u>Learn more about the substitution (and also elimination!) method here:</u>
brainly.com/question/14619835
answer:
9/11
Step-by-step explanation:
(12-3)/(6-(-5))=9/11
Both sides are identical.
