well, the subtotal or pre-tax bill is $23.50, now let's add the 8% tax and

so the post-tax bill is 23.50 + 1.88 = 25.38, and Jackie's tip is 20% of that

 
        
             
        
        
        
Answer:
21.8° (22° to the nearest degree) 
Step-by-step explanation:
Using cosine law:
a² = b² + c² - 2bc(cosA)
3² = 5² + 7² - 2(5)(7)cosA
cosA = 13/14
A = 21.7867893
Approximately angle: 22°
 
        
             
        
        
        
<h2>VARIATION</h2>

<h3>QUESTION:</h3>
- If y varies directly as x and inversely as z,what is the correct equation describing the relationship between x,y,and z?
<h3>ANSWER:</h3>
The givén problem is an ēxample of <u>Combinēd </u><u>Variation</u>. So the córrect equation for this problem is this:
ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Hi, Im Daubechies, a Filipina user ≧▽≦
 
        
        
        
Answer:
b
Step-by-step explanation:
100%
 
        
             
        
        
        
2/5*15/17*3/4
= 2*15*3/5*17*4
= 2*15*3/340
= 90/340
=90/34
 hope this helps hope I'm right :)