Step-by-step explanation:
a. ( p × q ) ( q + r )
= ( -24 × 12 ) ( 12 + -6 )
= 288 × 18 
= 5184
b. ( p × r ) ( r - q )
= ( -24 × -6 ) ( -6 - 12 )
= ( 144 ) ( -18 )
= -2592
 
        
             
        
        
        
The acronym for trigs is SOH CAH TOA
Sine means opposite divided by hypotenuse
So, let us find sine.
The opposie side is 16
The hypotenuse is 17.46

Use your calculator
The answer is ≈ 0.9164
 
        
        
        
The mean is 10,724.28.
Explanation:
The mean is all of the values divided by the number of values there are. 
So what you have to do is add all of the numbers and divide it by the amount of numbers there are. 
10,150+10,211+10,424+10,769+10,884+11,155+11,477= 75,070.
Since there are 7 numbers, divide 75,070/7 and you get your mean, which is 10,724.28 rounded.
        
             
        
        
        
Answer:
y ≤-7
Step-by-step explanation:
-8y ≥56
Divide each side by -8.  Remember to flip the inequality
-8y/-8 ≤56/-8
y ≤-7