Answer:
(3,-3)
Step-by-step explanation:
First you divide 2 out of the first equation and it turns into 5x+y=12.
Then you write one on top of the other so you can add them. It looks like:
5x + y = 12
-5x + y = -18
Then you add them together and the 5x's cancel each other out and you are left with 2y = -6
So then you divide both sides by 2 and get y = -3
Then you plug -3 into the second equation because it is simpler and get -5x - 3 = -18
So then you add three to both sides and get -5x = -15
And finally you divide both sides by -5 and get x=3
Answer:
26.83
Step-by-step explanation:
The missing leg is the square root of 29^2 - 11^2, which is 26.83.
9 (cents per ounce) multipled by 16 (amount of ounces to make a pound) which makes 1 pound of candy 1.44 USD. Using the information given, 1.2 CAN dollars is equal to 0.96 dollars. Making the Canadian candy more cheaper.
Answer:
No Solutions
[y = -x - 2, y = -x - 6]
One Solution
[y = 2x, y = -2x]
[y = -3, x = -6]
Infinitely Many Solutions
[y = 3x + 4, 2y = 6x + 8]
Step-by-step explanation:
When the lines have the same slope (m) but different y-intercept (b), the lines are parallel and never intersect, thus we have no solutions.
When the lines have different slopes (m), the lines would intersect at one point so we have one solution.
When the lines have the same slope (m) and same y-intercept (b), the equations both represent the same linear line, so we have infinitely many solutions.
From 1st equation
d + e = 2
d = 2 - e
From 2nd equation, subtitute d with 2 - e
d - e = 4
2 - e - e = 4
2 - 2e = 4
-2e = 2
e = -1
Find d
d = 2 - e
d = 2 - (-1)
d = 3
The solution is (3,-1)
