Answer:
Are also equal
Step-by-step explanation:
Say triangle A has the angles 30 and 60. triangle b also has those angles. Total angle of any triangle is 180 so 180-60-30 = 90 for triangle A and it is also the same for triangle b. Thus 90 = 90 angles are the same.
 
        
             
        
        
        
<h2>135 cubic feet of concrete are required to create the platform.</h2>
Step-by-step explanation:
The dimension of lower step is 6 ft× 3 ft× 1.5 ft 
and the dimension of upper step is 6 ft ×(9-3)ft × (1.5+1.5)ft = 6 ft × 6 ft ×3 ft
Therefore concrete are required to make lower step = (6×3×1.5) cubic feet
                                                                                        = 27 cubic feet
and concrete are required to make upper step = (6×6×3) cubic feet
                                                                                =108 cubic feet
<h3>∴(108+27) cubic feet = 
135 cubic feet of concrete are required.</h3>
  
        
        
        
Answer:
Step-by-step explanation:
z = 3
2y + z = 1
2y + 3 = 1        {substituting z =3}
2y = 1 -3
2y = -2
y = - 2/2 
y = -1 
2x +3y +2z = 13
2x + 3 * (-1) + 2*3 = 13      { {substituting z =3} and y = -1}
2x -3 + 6 =13
2x + 3 = 13
2x  = 13 - 3
2x= 10
x = 10/2
x = 5
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
Both equal 15,625
 
        
                    
             
        
        
        
Answer: 
4 times as tall 
hope this help:))