9514 1404 393
Answer:
   11.5 m
Step-by-step explanation:
The fact that the figures are similar means the side lengths are proportional:
   RS/QT = BC/AD
   RS/(7 m) = (2.3 m)/(1.4 m)
   RS = (7 m)(2.3/1.4) . . . . . . multiply by 7 m
   RS = 11.5 m
   
 
        
             
        
        
        
To work out the Circumference of a circle, we must o the calculation
πd
π x d
If we fill in the information we know
π x 10.4
3.14 x 10.4       (to 2 d.p.)
↓
32.656 (units)
        
                    
             
        
        
        
 6(2x - 11) + 15 = 21 
First step use distributive property on the left side to remove the parenthesis, to do this multiply 6 by each term inside the parenthesis:
12x - 66 + 15 = 21
Second step, simplify the left side by combining the like terms:
12x - 51 = 21
Third step, add 51 to both sides of the equation:
12x = 72
Last step, divide both sides by 12:
x = 72/12
x = 6
 
        
             
        
        
        
Answer:
Step-by-step explanation:
12x+18=75
 -18=-18
12x= 57
Divide by 12.
57/12=4.75
Grace can buy 5 books including the reference book
 
        
             
        
        
        
Answer:
i believe the bottom is a <em>irregular quadrilateral </em>and the first one is a <em>parallelogram </em>
Step-by-step explanation: