Brad have 19 quarters and 27 nickels.
Step-by-step explanation:
Given, 
Total worth of nickels and quarters = $6.10 = 6.10*100 = 610 cents
One quarter = 25 cents 
One nickel = 5 cents 
Let, 
x represent the number of quarters.
y represent the number of nickels.
According to given statement;
25x+5y=610     Eqn 1
y = x+8              Eqn 2
Putting value of y from Eqn 1 in Eqn 2

Dividing both sides by 30 

Putting x=19 in Eqn 2

Brad have 19 quarters and 27 nickels.
Keywords: linear equation, subtraction
Learn more about subtraction at:
#LearnwithBrainly
 
        
             
        
        
        
Answer:
   1/6
Step-by-step explanation:
The product will only be of the required form if the two chosen factors are of the form (x +by) and (x -by).
For the factor (x+y), there is also a factor (x-y) on the list. For the factor (x+5y), there is no factor (x-5y) available.
So, of the (4·3)/2 = 6 possible ways to choose two expressions from the four given expressions, only one pair of the 6 will have a product of the required form.
The probability is 1/6.
 
        
             
        
        
        
St meaans s times t
s=-4
t=9
st=-4 times 9
negative times positive=negative
4 times 9=36
-4 time s9=-36
st=-36
answer is -36
        
                    
             
        
        
        
 $11 is the independent and the $30 is dependent because to get the $30 a week, it depends on that $11 per house.
        
             
        
        
        
Answer:
$18
Step-by-step explanation:
Let's subtract the lunch from the trip total to get the remainding cost!   
36.50 - 9.50 =  $27 
Now let's set up an equation to figure out the amount of the entrance ticket and the gift coupon! 
let's have x = the entrance ticket 
27 = x + 1/2(x) -----------> 1/2 is next to x, because the gift coupon is 1/2, or 50% of the entrance ticket! Now solve for x! 
27 = 3/2x
(2/3) 27 = 3/2x (2/3)
18 = x, so the entrance ticket is $18!