Mariya is solving the quadratic equation by completing the square.

4x2-20x+3=0

4x2-20x=-3

a(x2-5x)=-3

what is the value of a?

-20
3
4
5

A=4

Step-by-step explanation:

Mariya was solving:

4x2-20x+3=0  

4x2-20x=-3

A(x2-5x)=-3

At this point, we can know that 4*x2=4x2 and 4*5x=20x, son A=4

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98