Answer:
Step-by-step explanation:
If J can paint a room in 3 hours, in 1 hour she gets  of the job done.
 of the job done.
If A can paint a room in 4 hours, in 1 hour she gets  of the job done. We need to find out how long it takes them if they paint together. The equation for this is:
 of the job done. We need to find out how long it takes them if they paint together. The equation for this is:
 where x is the number of hours it takes them to get the job done together. Multiply everything through by 12x to get
 where x is the number of hours it takes them to get the job done together. Multiply everything through by 12x to get
4x + 3x = 12 so
7x = 12 and 
x = 1.7 hours to get the room painted together.
 
        
             
        
        
        
Answer:
n = 12 nickels
d = 11 dimes
q = 7 quarters
Step-by-step explanation:
.05n + .1d + .25q = 3.45
n + d + q = 30
n = q + 5
n = 12
d = 11
q = 7
 
        
             
        
        
        
Answer:
I found two different solutions. Hope one of them help!
 1. x = -1/3 = -0.333
 2. x = 5/2 = 2.500
Step-by-step explanation:
13 ± √ 289
   x  =    ——————
                      12
Can  √ 289 be simplified ?
Yes!   The prime factorization of  289   is
   17•17 
To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).
√ 289   =  √ 17•17   =
                ±  17 • √ 1   =
                ±  17
So now we are looking at:
           x  =  ( 13 ± 17) / 12
Two real solutions:
x =(13+√289)/12=(13+17)/12= 2.500
or
x =(13-√289)/12=(13-17)/12= -0.333
Two solutions were found :
 x = -1/3 = -0.333
 x = 5/2 = 2.500
 
        
             
        
        
        
Answer:
180
Step-by-step explanation:
900/ 10= 90x 2= 180
haha very bad explaination but hope it helps <3
 
        
                    
             
        
        
        
Answer:
<h3>The answer is 10.2 units</h3>
Step-by-step explanation:
The distance between two points can be found by using the formula

where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
U (7,-4) and V(-3,-6)
The distance between them is

We have the final answer as
<h3>10.2 units to the nearest tenth</h3>
Hope this helps you