Step-by-step explanation:
(1,4)
I hope this will help you
Answer:
b = {-16, 16}
Step-by-step explanation:
Yeah
Answer:A
Step-by-step explanation:
Answer:
Step-by-step explanation:
For the first question: You need to multiply 20 by 0.05 to find the sales tax amount in dollars, which gives you $1. The sales tax is equal to $1.
For the second question: To find the total cost, add $1 to $20 to get $21 as the total cost for the shirt.
The first equation is 
(Equation 1)
The second equation is
(Equation 2)
Putting the value of x from equation 1 in equation 2.
we get,


by simplifying the given equation,


Using discriminant formula,


Now the formula for solution 'x' of quadratic equation is given by:


Hence, these are the required solutions.