Answer:
$14.80
Step-by-step explanation:
Tax:
        3% of 12 is .4. So she would pay $0.40 for the tax.
Tip:
        20% of 12 is 2.4. So she would pay $2.40 for the tip.
Sum:
        Then you would add them all together, 12 + 0.4 + 2.4 = 14.8. So she payed $14.80 in all.
 
        
             
        
        
        
Answer:
24
Step-by-step explanation:
what is the smallest number which is a multiple of both 8 and 12? so, an multiple of 8 must have 2 as a factor at least 3 times. Similarly, multiples of 12 have at least two 2's and one 3. so we need 2x2x2x3 or 24 if every factor is to be included.
I'm not the best at explaining but you can search google to get the better Idea. 
(btw this is for the fist question)
 
        
             
        
        
        
Tan w=20/83
inverse tan 20/83=13.55 degrees
        
             
        
        
        
Answer:
$45
Step-by-step explanation:
3/4×60= 45
cost of jacket in sale: $45
hope it helps!