If this is a system of equations then:
Multiply 5x-y=3 by -2
=> -10x+2y=-6
Now you sum the equations:
10x-10x+7y+2y=-3-6
=> 9y=-9
Then just divide by 9: y=-1
Now to get x, choose one of the equations and use the value we got from y:
5x-(-1)=3 => 5x+1=3 => 5x=3-1
=> 5x=2
=> x=2/5
(x,y)=(2/5, -1)
Answer:
48%
Step-by-step explanation:
Data provided in the question:
Selling price of the gaming card = 9.99
Amount paid for the card i.e purchasing cost = 6.75
Now,
The markup percentage is calculated as:
Markup =
or
Markup =
or
Markup =
or
Markup = 0.48 × 100% = 48%
Answer:
C
Step-by-step explanation:
Tomas learned that

If
, then

Product of 1 and x = x × 1 = x
4 less than product of 1 and x = x - 4
Thus, the expression to represent Four less than the product of one and a number x is (x - 4)
Use formula:
an = a1 + d(n - 1)
a1 = -4, d = 5
Plug in the numbers
a20 = -4 + (20-1) * 5
a20 = -4 + 95, a20 = 91
Solution: the 20th term is 91