I believe that choice A is the best answer out of those given above.
Hope this helps and please enjoy Brainly! -ZeusROX
Answer: 28
Step-by-step explanation: ADB = 1/2 ACB
2x + 2y + 1z = -5 ⇒ 2x + 2y + 1z = -5 ⇒ 4x + 4y + 2z = -10
3x + 4y + 2z = 0 ⇒ 3x + 4y + 2z = 0 ⇒ 3x + 4y + 2z = 0
1x + 3y + 2z = 1 x = -10
2x + 2y + 1z = -5
3x + 4y + 2z = 0 ⇒ 3x + 4y + 2z = 0
1x + 3y + 2z = 1 ⇒ 1x + 3y + 2z = 1
2x + y = -1
2x + y = -1
2(-10) + y = -1
-20 + y = -1
+ 20 + 20
y = 19
2x + 2y + z = -5
2(-10) + 2(19) + z = -5
-20 + 38 + z = -5
18 + z = -5
- 18 - 18
z = -23
(x, y, z) = (-10, 19, -23)
5 feet = 60 inches
4 1/2 inches = 1 hour
60 inches = 1 ÷ 4 1/2 x 60
= 13 1/3 hours
If the snow keeps accumulating, it would take 13 1/3 hours for 5 feet of snow to accumulate.
