Solve the system. if there's no unique solution, label the system as either dependent or inconsistent.
2x + y + 3z = 12
x – y + 4z = 5
–4x + 4y – 16z = –20
a. (4, 1, 2)
b. (1, 4, 2)
c. inconsistent system (no solution)
d. dependent system (infinite number of solutions)

simplify bottom equation by dividing all terms by 4 to get -x + y - 4z = -5.

divide all terms by -1 to get x - y + 4z = 5.

now you’re only left with two equations since the bottom two are essentially the same.

solve for x in the second equation.

x = 5 + y - 4z

substitute x into the first equation and simplify.

2 (5 + y - 4z) + y + 3z = 12

10 + 2y - 8z + y + 3z = 12

3y - 5z = 2

substitute x into the second equation and solve for y.

5 + y - 4z - y

1. 2

2. 8

3. 9

step-by-step explanation:

lol can i have brainliest, i spent hours trying to figure these mind boggling math questions out

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest