<h3>
Answer:     Negative</h3>
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Explanation:
3/7 = 0.42857 approximately
Pick a number between that value and 5, not including either endpoint. Let's say we pick x = 2
Plug x = 2 into the f(x) function
f(x) = (x - 5)(2x + 7)(7x-3)
f(2) = (2 - 5)(2*2 + 7)(7*2-3)
f(2) = (2 - 5)(4 + 7)(14-3)
f(2) = (-3)(11)(11)
f(2) = -363
The actual result doesn't matter. All we're after is whether the result is positive or negative. We see the result is negative. This means f(x) is negative when 3/7 < x < 5. The f(x) curve is below the x axis on this interval.
 
        
        
        
Cos(68)=z/24
Z=24cos(68)
Find the answer by the calculator 
Second question,
Cos(x)=16/34
X=cos^-1(16/34)
Use calculator
        
             
        
        
        
Step-by-step explanation:
2 (x-3)-4 (x+3)
 
        
                    
             
        
        
        
Answer:
28 yd²
Step-by-step explanation:
find the two biggest sides 
2x4 
8 but there are two sides... 
8*2= 16 
*16* 
now side panels 
1x4 
4 but there are two 
4*2= 8 
*8* 
top and bottom panels 
2x1 
2 but there are two 
2*2= 4 
*4*
add them up 
16 + 8 + 4= 28  
 
        
             
        
        
        
Answer:
195
Step-by-step explanation:
To find the 23rd term of this sequence, we can use the arithmetic sequence formula  where,
 where,
 =
 =  term
 term
 = first term
 = first term 
 = term position
 = term position 
 = common difference
 = common difference

