Answer:
91.8 ft above sea level
Step-by-step explanation:
Note that 1 meter is approx. 3.28 feet.
Converting 28 meters to feet is accomplished by multiplying 28 m by the conversion factor 3.28 ft  /  1 m:
28 m     3.28 ft
-------- * ----------- = 91.8 ft above sea level
   1           1 m
 
        
             
        
        
        
Answer:
x = -2 and y = 3
Step-by-step explanation:
It is given that,
4x + 5y = 7    -----(1)
3x – 2y = –12   ----(2)
<u>To find the value of x and y</u>
eq(1) * 3 ⇒
12x + 15y = 21   ----(3)
eq(2) * 4 ⇒
12x - 8y = -48  ---(4)
eq(3) - eq(4) ⇒
12x + 15y = 21   ----(3)
<u>12x - 8y = -48 </u> ---(4)
  0 + 23y = 69
y = 69/23 = 3
Substitute the value of y in eq(1)
4x + 5y = 7    ----(1)
4x + 5*3 = 7
4x = 7 - 15 = -8
x = -8/4 = -2
Therefore x = -2 and y = 3
 
        
             
        
        
        
6 sin θ - 3 csc θ = 0
6 sin θ = 3 csc θ = 3/sin θ
6 sin^2 θ = 3
sin^2 θ = 3/6 = 1/2
sin θ = sqrt(1/2)
θ = arcsin(sqrt(1/2)) = 45 degrees.
θ = 45°
        
             
        
        
        
Answer:
3
Step-by-step explanation:
Remember the order of operations using PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).  So, you get  18 - 6   / 5-1  = 12/4 = 3