Answer:
A) A 9% downhill grade means that the decrease in elevation of the road over the segment is 9% of the change in Horizontal distance over the same segment. In other words, for every 100 horizontal feet the road descends 9 feet and the road has a slope of 0.09 vertical feet per horizontal foot.
Step-by-step explanation:
A Certain westbound U.S highway truck route near a river has a downhill grade of 9% 
A) A 9% downhill grade means that the decrease in elevation of the road over the segment is 9% of the change in Horizontal distance over the same segment. In other words, for every 100 horizontal feet the road descends 9 feet and the road has a slope of 0.09 vertical feet per horizontal foot.
In other to make things clear, lets assume 
 for X = 1 , y = 9% = 0.09
for y =  9 , x = 9 / 0.09 = 100
slope = y/x = 0.09 / 1 = 0.09
 
        
             
        
        
        
Answer:
D. 21/2
Step-by-step explanation:
We simply have to evaluate the first three terms based on the progression's formula:
t= 1,  the first term is 8, as we see:

t=2, the second term is 2, as we see:

t=3, the third term is 1/2, as we see:

The sum of the first 3 terms is then: 8 + 2 + 1/2 = 10 1/2
Among the answer choices, D. 21/2, which is 10 1/2.
 
        
             
        
        
        
Answer:
x=5
Step-by-step explanation:
Since 32 is 8 times 4 cm, then 40/8=5.
 
        
                    
             
        
        
        
2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression
        
             
        
        
        
Answer:
200 feet of the ground at a thirty degrees angle does not make a difference .
 u need to know whether it is the top or bottom of it, the kite