Answer:
A
Step-by-step explanation:
just count lol
Answer:
which angle relarion send angle photo also
To figure out which ordered pair is a solution to the equation 3x + 5y = 9, substitute the coordinates of each answer choice into the equation. Remember that coordinates are written as (x, y) where the first number in the parentheses is x in the equation and the second number is y in the equation.
A. (-2, -3)
x = -2, y = -3
Substituting into the equation gives
3(-2) + 5(-3) = 9
-6 - 15 = 9
-21 = 9
This does not satisfy the equation, so (-2, -3) is not a solution.
B. (2, 3)
x = 2, y = 3
3(2) + 5(3) = 9
6 + 15 = 9
21 = 9
21 does not equal 9; therefore (2, 3) is not a solution.
C. (-2, 3)
x = -2, y = -3
3(-2) + 5(3) = 9
-6 + 15 = 9
9 = 9
This satisfies the equation, so (-2, 3) is a solution.
D. (2, -3)
x = 2, y = -3
3(2) + 5(-3) = 9
6 - 15 = 9
-9 = 9
This does not satisfy the equation; therefore (2, -3) is not a solution.
Answer: a) C = 0.126x + 1.5
b) C = 2.382 c) approximately 179 units
Step-by-step explanation: profit P(x), total revenue R(x) and total cost (C) are related by the formulae below.
Profit = total revenue - total cost
P(x) = R(x) - C
From the question, P(x) = 0.084x - 1.5, R(x) = 0.21x.
Question a)
C = R(x) - P(x)
C = 0.21x - {0.084x - 1.5}
C = 0.21x - 0.084x + 1.5
C = 0.126x + 1.5
Question b)
If C = 0.126x + 1.5, then C at x = 7 units is gotten below as
C = 0.126(7) + 1.5
C = 0.882 + 1.5
C = 2.382.
Question c)
The break even point is the point where total revenue R(x) equals total cost C.
R(x) = 0.21x and C = 0.126x + 1.5
0.21x = 0.126x + 1.5
0.21x - 0.126x = 1.5
0.084x = 15
x = 15/ 0.084
x = 178.57 which is approximately 179 units (since quantity of units can't be decimal)