Answer:
x = 1
Step-by-step explanation:
4/5x - 8 = 12
add 8 to each side
4/5x = 20
divide 4/5 to each side
x = 1
Answer:
Ax + Ay + 2A = 0 for any nonzero A, for example (A=1): x + y + 2 = 0
Step-by-step explanation:
The equation of a line is
Ax + By + C = 0
so we know that:
A*-3 + B*1 + C = 0
A*5 + B*-7 + C = 0
Let's subtract one from the other:
A*(-3 - 5) + B*(1 + -7) = 0
A*-8 + B*8 = 0
B*8 = A*8
B = A
Let's input B = A into the first two equations
A*-3 + A*1 + C = A*-2 + C = 0
A*5 + A*-7 + C = A*-2 + C = 0
checks out
C = 2A
So for any nonzero A the equation of
Ax + Ay + 2A = 0 produces a line passing between the points. Example would be
x + y + 2 = 0
Answer:
7
Step-by-step explanation:
3 + m =
3 + 4 =
7
Answer:
Price for one pound = 50 cents
Step-by-step explanation:
Apples are on sale at the market 4 pounds for $2.00.
That is price for one pound = 0.5 $
We have 1 dollar = 100 cents
Price for one pound = 0.5 $ = 0.5 x 100 = 50 cents
Price for one pound = 50 cents
