Answer: 55.4 mins
Step-by-step explanation:
pragnesh and qazi = 2hrs
pragnesh and roghui = 3hrs
qazi and roghui = 4hrs
this means for every 1 hour they wold paint.
pragnesh and qazi =  half of the fence
 half of the fence
pragnesh and roghui = 
qazi and roghui =  quarter of the fence
 quarter of the fence
time taken when they all work together
=   +
 +  +
 + 
= 
= 
= 0.9231 × 60(mins)
= 55.4 mins
 
        
             
        
        
        
Let the constant of variation be c.
We are given that y varies inversely with 2.5x, this means that:
y = (c) / (2.5x)
This can be written as:
2.5xy = c
Now, we a re given that y = 5.6 at x = 30.
Substitute with these values in the equation to get the value of c as follows:
2.5xy = c
2.5(30)(5.6) = c
c = 420
Therefore, the equation that describes the relation is:
2.5xy = 420
        
             
        
        
        
Answer:
x=36
Step-by-step explanation:
So, lets go over what we know:
16 is equal to 4/9ths of x.
As a equation, this looks like:

We can begin to solve for x by multiplying both sides by the denominator, 9, which gets us:

=

Then we can divide by the coefficent of x, which is 4, to get our answer:

=

This is our answer! Hope this helps! :3
 
        
                    
             
        
        
        
8x - 3/x 
x = 1/2 
(8 • 1/2) - 3/0.5 
4 - 1.5 
2.5
        
             
        
        
        
Answer:
x=2 AB=hypotenus(h) angle ACB is 90
 BC=p angle CAB is 30 also angle of refrence
Step-by-step explanation:
sin[30]=p/h
(1/2)=x/4
2x=4
x=2