Answer:
i also dont know
Step-by-step explanation:
Answer:
A) (-infinity, -7]U[-2, -1]
B) [-7, -5]
C) [-5, -2]U[-1, infinity)
Answer:
x=1, y=2. (1, 2).
Step-by-step explanation:
-3x+10y=17
3x+7y=17
---------------
17y=34
y=34/17
y=2
3x+7(2)=17
3x+14=17
3x=17-14
3x=3
x=3/3
x=1
Answer: The number is 12
Step-by-step explanation:
n=number
2n-8=16
2n=24
n=12
Answer:
4x + 2
Step-by-step explanation:
x - 1 is adding an x and subtracting a 1 ,so
x + x + x + (x - 1) + 1 + 1 + 1
= x + x + x + x - 1 + 1 + 1 + 1 ← collect like terms
= 4x + 2