Answer:
im guessing its d
Step-by-step explanation:
Answer:
x= -11
Step-by-step explanation:
1/2(x-8)=3/2x+7
distribute
1/2x-4 = 3/2x+7
subtract 1/2x from both sides
1/2x cancels out
-4 = 1x+7
subtract 7 from both sides
-11 = 1x (1x is the same as "x")
Answer:
x = -2
y = -1
Step-by-step explanation:
2x+y = -5 so y = -5-2x
3x+2y = -8
substitute for y
3x+2(-5-2x) = -8
3x-10-4x = -8
-10-x = -8
add 10 to both sides
-10+10-x = -8+10
-x = 2
divide both sides by -1
-x/-1 = 2/-1
x = -2
y = -5-2(-2)
y = -5+4
y = -1
Answer:
This mapping isn't a function.
Step-by-step explanation:
A mapping specifies a relation between two sets of items (input and output). For example, a mapping of the form
would map the input
to output
and map the input
to output
.
A function is a mapping where each input is associated with exactly one output.
Note that both
and
are in the mapping given in this question. The input
is mapped to more than one outputs. Thus, this mapping isn't a function.