(n*3)+6-(n*2)=n+3
3n+6-2n=n+3
3n-2n-n=3-6 every n on the left and free numbers on the right
0=-3
contradiction, there are no solution
380 divide by 20
it will take her 19 hours to stamp 380 letters
Answer:
10 tacos costs $15.00
Step-by-step explanation:
I like to use ratio's to solve this type of problem. I will put cost over number of tacos.
$6.00 x dollars
-------- = --------------
4 tacos 10 tacos
Using cross products
6 * 10 = 4 * x
60 = 4x
Divide each side by 4
60/4 = 4x/4
15 =x
10 tacos costs $15.00
Answer:
C (37, 77)
Step-by-step explanation:
<h3>Option A:</h3>
Option A is not a solution.
<h3>Option B:</h3>
Option B is not a solution.
<h3>Option C:</h3>
Option C is a solution.
Hope this helps.
