What value of a gives (-1,1) as the solution of the following system?
3x+ 5y = 2
ax + 8y = 14
choose the correct answer below.
w
oa. -6
o b. -22
o co
o d. 22
o e 6

A)  For (-1,1) to be the solution of the given system of equations, the value of a = -6.

Step-by-step explanation:

Here, the given system of equation are:

3x+ 5y = 2

ax + 8y = 14

Now, as (-1,1) is given as the solution for the system.

⇒ (-1,1) is also the solution for the equation ax  +  8 y = 14

So,  for x = -1 and y = 1, the equation is SATISFIED.

⇒ a(-1) + 8(1)  = 14

⇒  -a + 8  = 14

or, -a  =  14 - 8 = 6

⇒ a = -6

or,  - 6 x + 8y = 14  is the required equation.

Hence, for (-1,1) to be the solution of the given system of equations, the value of a = -6.

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

3

step-by-step explanation: