Answer:
B. 
= -.7
Step-by-step explanation:
Replace all occurrences of − − with a single +. Two consecutive minus signs have the same mathematical meaning
Find the common denominator.
Simplify terms.
Simplify the numerator.
Reduce the expression by cancelling the common factors.
<em>hope this helps, good luck :)</em>
Multiply 120 by .2 to get 24
4:3 (simplified) and 16:12 (doubled) both work
Hope this helps!
Answer:
x=1,-9
Step-by-step explanation:
Move all terms to the left side of the equation and simplify.
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x
2
+
8
x
−
9
=
0
Use the quadratic formula to find the solutions.
−
b
±
√
b
2
−
4
(
a
c
)
2
a
Substitute the values
a
=
1
,
b
=
8
, and
c
=
−
9
into the quadratic formula and solve for
x
.
−
8
±
√
8
2
−
4
⋅
(
1
⋅
−
9
)
2
⋅
1
Simplify.
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x
=
−
4
±
5
The final answer is the combination of both solutions.
x
=
1
,
−
9
Set B has 2 of the same Y values which makes it not a function.
