Answer:
12
Step-by-step explanation:
one the first one the sign flipped because you divided by a negative number, on the third one it was all real numbers because the coefficients of n (which was "3") are equal and 3n+15 is greater than or equal to 3n+8 no matter what number you put in
Answer:
y=27
Step-by-step explanation:
x = k/y
9 = k/6
k = 54
so
2 = 54/y
y= 27
X=-3 and y=5
2x+y=-1
-x+3y=18
3y-18=x
2(3y-18)+y=-1
6y-36+y=-1
7y=-1+36
7y=35
y=35/7
y=5
-x+3y=18
-x+3(5)=18
-x+15=18
-x=18-15
-x=3
x=-3
Answer:
A={Delaware, Pennsylvania, New Jersey}
|B|=3
Step-by-step explanation:
B={New Hampshire, Virginia, New York}