Find an equivalent system of equations for the following system:
2x + 4y = 4
-5x + 5y = 5
2 answers:
Answer:
A
Step-by-step explanation:
x + 2y = 2
-1x + 1y = 5 Is not the correct answer!!!
The options are
a) 2x + 4y = 4
-3x +y = -1
b) 2x + 4y = 4
7x + 5y = -1
c) 2x + 4y = 4
7x - y = 5
d) 2x + 4y = 4
7x - y = -1
Answer:
x+2y=2
-1x+1y=5
Step-by-step explanation:
Any system whose equations have the following characteristic
x+2y=2
-1x+1y=1
Is equivalent to the original system, since the differ in a number, the first equation is divided by 2 and the second by 5, we can say any system is equivalent to the original when it is escalated by a factor between its functions.
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The domain of a relation, otherwise known as a function, is the input, or x values, of the relation
Answer:
-81t^2 +16
Step-by-step explanation:
(9t-4)(-9t-4)
FOIL
first: -9t*9t = -81t^2
outer : -4*9t = -36t
inner : -4 *-9t = 46t
last = -4*-4 = 16
Add them together
-81t^2 -36t+36t+16
-81t^2 +16
Answer:
Step-by-step explanation:
⅓x + 7 = -2
isolate the x term by subtracting 7 from both sides
⅓x = -9
Multiply both sides by 3
x = -27
