x = 3
2x + y - z = 3 → (1)
- x + y + 2z = 0 → (2)
3x + 2y + z = 9 → (3)
we require to eliminate the y and z terms from the equations
(1) + (3) : 5x + 3y = 12 → (4)
multiply (1) by 2
4x +2y - 2z = 6 → (5)
(2) + (5) : 3x + 3y = 6 → (6)
(4) - (6) : 2x = 6 ⇒ x = 3
#1: A
#2: C
#3: C
Checked and double checked each one. Hope this helps. 8)
Answer:
x can take any value less than 3.
Step-by-step explanation:
This is an inequality.
Lets solve the inequality for x
This means x can take any value less than 3.
We can show this by using a number line.
Notice how number 3 is not fully shaded, this means x cannot be 3. And all the numbers less than 3 to infinity is shaded, meaning x can take any value in that range.
Answer:
x=6
Step-by-step explanation:
5x-10=3x+2
5x-3x=2+10
2x=12
Answer:
Given sin150 = 0.5
sin75 = 0.25
Step-by-step explanation:
This is because you divide on both sides by 2.
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