Answer:
72
Step-by-step explanation:
9 = 3^2
18 = 2 * 3^2
72 = 2^3 * 3^2
For LCM use common and not common factors with greater exponent.
Use 2^3 and 3^2.
LCM = 2^3 * 3^2 = 8 * 9 = 72
Answer: 72
Answer:
Total cost of meal is $60
Step-by-step explanation:
The cost of meal = $50
Tip = 20%
We need to find total cost of meal
First find 20% of 50 to get the amount given for tip
![20\% \:of\: 50\\=\frac{20}{100}\times 50\\=10](https://tex.z-dn.net/?f=20%5C%25%20%5C%3Aof%5C%3A%2050%5C%5C%3D%5Cfrac%7B20%7D%7B100%7D%5Ctimes%2050%5C%5C%3D10)
So, tip given is $10
Total cost of meal = 50+10 = $60
So, total cost of meal is $60
Answer:
C
Step-by-step explanation:
start with factoring.
5x+15-9x+4
then solve
-4x+19