Answer:
Step-by-step explanation:
12x-20=6(x-20)-9x
Opening bracket
12x - 20 = 6x - 120 - 9x
Collecting like terms
12x - 6x + 9x = -120 + 20
15x = -100
Dividing by 15
15x/15 = -100/15
x = -20/3
x = - 6 2/3
Answer:
7 < x < 9
Step-by-step explanation:
x^2 – 16x + 63 < 0
this is a parabola that opens up.
The parabola will be < 0 for values between the roots.
to picture this see the graph below.
Factor
(x - 7)(x - 9) < 0
Roots
x = {7, 9}
solution
7 < x < 9
Answer:
the correct option is<u> d) 72</u>
Step-by-step explanation:
The given expression is 
first multiply numerator and then solve the fraction


solve the fraction,

∴The equivalent expression of
is 72
Hence, the correct option is<u> d) 72</u>
16c+1
You add the LIKE terms together.
Answer:
d is the qnswer.
Step-by-step explanation:
the value of |X+2| can't be negative.