Answer:
$475
Step-by-step explanation:
998=x+y
y=48+x
graph 
intersect at (475,523)
 
        
             
        
        
        
Answer:
the total cost is $705.77
Step-by-step explanation:
 
        
             
        
        
        
Answer:
<h2>140 minutes</h2>
Step-by-step explanation:
 
 this problem focuses on the combined work rate
both can finish the work under 63 minute
let bobby mow the lawn in x minute
Billy will then mow the lawn in x-25 minutes
Let the completed job = 1 (a mowed lawn)
we can now apply the combined work formula for the two boys as
 
 
multiplying through by x(x-25 )we have

open bracket we have

rearranging and collecting like terms we have

we can now use the quadractic formula
 
 
   
a= 1
b= -151
c= 1575



the first answer x= 139.72 approximately 140 minutes mins is correct for  Bobby's time
 
let us check

we can see that the solution approximates to 1 
 
        
             
        
        
        
Answer:
<em><u>The numbers are 12 and −29.</u></em>
<em><u> </u></em><em><u>Mark</u></em><em><u> </u></em><em><u>me</u></em><em><u> </u></em><em><u>as</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>brainlist</u></em>
 
        
             
        
        
        
Answer:
<u>The price of oranges is US$ 2 per pound and the price of bananas is US$ 1 per pound.</u>
Step-by-step explanation:
1. Bananas and oranges bought by Nancy:
Oranges = 7 pounds 
Bananas = 3 pounds
Cost = US$ 17
2. Bananas and oranges bought by Nancy's husband:
Oranges = 3 pounds or 3x
Bananas = 6 pounds or 6y
Cost = US$ 12
3x + 6y = 12 (Dividing by 3 at both sides of the equation)
x + 2y = 4
x = 4 - 2y
3. Total Purchases:
Oranges = 10 pounds or 10x
Bananas = 9 pounds or 9y
Cost = US$ 29
10x + 9y = 29
10 (4 - 2y) + 9y = 29 (Replacing x with 4 - 2y from 2nd purchase)
40 - 20y +9y = 29
-11y = 29 - 40
- 11y = - 11 
y = 1 (Dividing by -11 at both sides)
<u>Pound of bananas = US$ 1</u>
10x + 9 (1) = 29 (Replacing y by 1 in the original formula)
10x + 9 = 29
10x = 20
x = 2 (Dividing by 10 at both sides)
<u>Pound of oranges = US$ 2</u>