Weegy: d
User: Which ordered pair is a solution of the inequality?
y4x - 5
A. (3, 4)
B. (2, 1)
C. (3, 0)
D. (1, 1)
Weegy: A. (3, 4)
User: What is the solution of the system? Use elimination.
3x – 4y = –24
x + y = –1
A. (–4, 3)
B. (0, 6)
C. (3, 4)
D. (4, 3)
Weegy: The answer is A. (?4, 3)
User: -4 or 4
Weegy: Is the 2 raised to -4 or -4(4)?
User: What is the solution of the system? Use elimination. 3x – 4y = –24 x + y = –1 A. (–4, 3) B. (0, 6) C. (3, 4) D. (4, 3)
Weegy: The answer is A. (?4, 3)
User: The local zoo is filling two water tanks for the elephant exhibit. One water tank contains 34 gal of water and is filled at a constant rate of 4 gal/h. The second water tank contains 30 gal of water and is filled at a constant rate of 2 gal/h. Explain. Let x = the number of hours the tanks are filling and let y = the number of gallons in the tank. What are the constraints on the system?
A. both x0, y0
B. x0 only
C. y0 only
D. There are no constraints on the system.
Weegy: The answer is A. both x0, y0
User: The local zoo has two water tanks for the elephant exhibit that are leaking One water tank contains 12 gal of water and is leaking at a constant rate of 3 gal/h. The second water tank contains 8 gal of water and is leaking at a constant rate of 5 gal/h. When will the two tanks have the same amount of water? Explain. Let x = the number of hours the tanks are filling and let y = the number of gallons in the tank.
A. In 2 hours, because the solution to the system is (2,18).
B. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have time be –2 hours.
C. In –2 hours, because the solution to the system is (–2,18).
D. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have –2 gallons in the tanks
Weegy: B. They will never have the same amount of ...
(More) 8
3x – 4y = –24 (equation 1)
x + y = –1 multiple 4 on both sides the result is:
4x + 4y = -4 (equation 2)
adding up equation 1 and 2 the result is:
7x = -28
x = -4,
-4 + y = -1
y = -1 + 4 = 3
The solution for the system 3x – 4y = –24, x + y = –1 is (-4, 3)
Added 6/9/2014 3:14:41 AM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [6/9/2014 3:19:24 AM]
8
x = -4y + 4
2x + 8y = 8
institute x in the second equation the result is:
2(-4y + 4) + 8y = 8
-8y + 8 + 8y = 8
0 = 0
thereare infinitely many solutions for the system x = -4y + 4 2x + 8y = 8.
Added 6/9/2014 3:16:34 AM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [6/9/2014 3:19:35 AM]
8
y = –3x + 2
y = –3x + 4
institute y in the second equation:
-3x + 2 = -3x + 4
-3x + 3x = 4 - 2
0 = 2 which is false
There are no solutions for the system y = –3x + 2 y = –3x + 4 since these two lines are parallel.
Added 6/9/2014 3:18:05 AM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [6/9/2014 3:19:46 AM]