Answer:
The value of the given expression is 84.
Step-by-step explanation:
The given expression is

The number 252 can be written as 240+12, because 24 can easily divisible by 3.
The compatible numbers are 240 and 12




Therefore the value of the given expression is 84.
 
        
             
        
        
        
Answer:
4-9=-5
Step-by-step explanation:
do the work you get that
 
        
                    
             
        
        
        
Answer:
636
Step-by-step explanation:
5xyz+3y
5(2.5)(12)(4)+3(12)
(12.5)(48)+36
600+36
636
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:
PERT estimate is a measuring strategy that is based on a weighted average. It is used in measuring the uncertainty and risk via three estimates to determine an estimated likelihood for a project's cost or period of completion.
The formula is (O + 4M + P) ÷ 6
Where P is the most pessimistic = 29
M is the most likely = 12
O is the most optimistic = 10
Hence we have (10 + [4*12]+ 29) ÷ 6
= (10 + 48 + 29) ÷ 6 
= 87÷6 = 14.5 ≈ 15
Rounded figure is equal to 15.
Hence the final answer to the question is 15
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Details are important because they are like pieces of a puzzle, they all work together to create the bigger picture.