To solve for <em>x</em>, we must first isolate the term containing <em>x</em> which in this problem is 5x.
Since 10 is being added to 5x, we subtract 10 from both sides of the equation to isolate the 5x.
On the left, the +10 and -10 cancel out and on the right, 20 - 10 is 10 and we have 5x = 10.
Now we can finish things off by just dividing both sides of the equation by 5. On the left the 5's cancel and on the right, 10 divided by 5 is 2 so <em>x = 2</em>.
Answer:
4.5
Step-by-step explanation:
To find the instantaneous rate of chance, take the derivative:
Remember to use power rule:
To differentiate -2/x, think of it as:
Then, substitute 2 for x:
55 because alternate interior angles are congruent and then you can do some basic algebra
$85 ÷ 5 = 17
You have to sell 17 more friendship bracelets to get $85
