basically buy low sell high
The selling price of an item is a function of the cost of making the item as the manufacturer needs to sell at a price which is higher than the cost of making the item in order to get his money back and obtain some profit also
quizlet
Answer:
x = 1
, y = 2
Step-by-step explanation:
Solve the following system:
{2 x - 3 y = -4
x + 3 y = 7
Hint: | Choose an equation and a variable to solve for.
In the second equation, look to solve for x:
{2 x - 3 y = -4
x + 3 y = 7
Hint: | Solve for x.
Subtract 3 y from both sides:
{2 x - 3 y = -4
x = 7 - 3 y
Hint: | Perform a substitution.
Substitute x = 7 - 3 y into the first equation:
{2 (7 - 3 y) - 3 y = -4
x = 7 - 3 y
Hint: | Expand the left hand side of the equation 2 (7 - 3 y) - 3 y = -4.
2 (7 - 3 y) - 3 y = (14 - 6 y) - 3 y = 14 - 9 y:
{14 - 9 y = -4
x = 7 - 3 y
Hint: | Choose an equation and a variable to solve for.
In the first equation, look to solve for y:
{14 - 9 y = -4
x = 7 - 3 y
Hint: | Isolate terms with y to the left hand side.
Subtract 14 from both sides:
{-9 y = -18
x = 7 - 3 y
Hint: | Solve for y.
Divide both sides by -9:
{y = 2
x = 7 - 3 y
Hint: | Perform a back substitution.
Substitute y = 2 into the second equation:
{y = 2
x = 1
Hint: | Sort results.
Collect results in alphabetical order:
Answer: {x = 1
, y = 2
The side opposite the left 45 degree angle is 8 as well since the 2 base angles are equal.
Use s^2 + b^2 = c^2
Solve for c
8^2 + 8^2 = c^2
64 + 64 = c^2
128 = c^2
c = sqrt(128)
c = sqrt(64 * 2)
c = 8 sqrt(2)
c = 11.31
Answer:
Step-by-step explanation:
For a solution to occur y=y so we can say
3x=2x+2 subtract 2x from each side
x=2, since y=3x
y=3(2)
y=6, so the solution exists at the point
(2,6)
3x+4y=-12
4y=3x=-12
-3x3=0
-3x-12=36
4y =36
4y/4 =0
36/4=9
y=9