Answer:
Step-by-step explanation:
I assume this is in radians.
cos(16/34) = 0.8913017
sin(32/40) = 0.7173560909
tan(32/24)4.13172899083
 
        
             
        
        
        
Answer:
Step-by-step explanation:
I do not know what you mean. What is the question?
 
        
             
        
        
        
Answer: There are 36 cows that can eaten 72 acres of grass in 126 days.
Step-by-step explanation:
Let x be the amount of grass in an acre initially.
Let y be the amount of grass grown in an acre per day.
Since we have given that 
12 cows can eat 10 acres of grass in 28 days
12×28  = 10x + 10×28 y
336 = 10x + 280 y----------------------------(1)
Similarly, 
21 cows can eat 30 acres of grass in 63 days.
21×63  = 30x + 30×63 y
1323 = 30x +1890 y ---------------------------(2)
So, by graphing method, we get the value of x and y

So, we have,  72 acres of grass in 126 days, we need to find the number of cows.
So, it becomes,
c×126 = 72x + 72×126 y

Hence, there are 36 cows that can eaten 72 acres of grass in 126 days.
 
        
             
        
        
        
Answer:
There should be 18 blue marbles in the representative sample.
Step-by-step explanation:
Given that a bag contains 9 white and 54 blue marbles, if a representative sample contains 3 white marbles, to determine how many blue marbles would you expect to contain the following calculation must be performed:
9 = 3
54 = X
54 x 3/9 = X
162/9 = X
18 = X
Therefore, there should be 18 blue marbles in the representative sample.
 
        
             
        
        
        
Answer:
k<±36
Step-by-step explanation:
Δ<0 (no real roots)
b²-4ac<0
k²-4x12x27<0
k²-1296<0
k²<1296
k<±36