You can add 8 to both sides so you get
x>5
The
symbol means intersection, so everything that is in both sets, and the
symbol means union, so the two sets combined.
So the answer is A.
Completing the square
alrighty
minus 31 both sides
x²+12x=-31
take 1/2 of the linear coefient and square it
12 is the linear coefient
12/2=6, (6)²=36
add that to both sides
x²+12x+36=36-31
factor perfect square trinomial
(x+6)²=5
square root both sides, remember to take positive and negative root
x+6=+/-√5
so what you want to write is
x+6=√5 and
x+6=-√5
the solutions
minus 6 both sides
x=-6+√5 and -6-√5
$0.30
Here's why:
3.60 30
--------- = -----
12 1
3.60 / 12 = .3
12 / 12 = 1
Answer:
True
Step-by-step explanation:
Simply, follow the conversion formula:
1 kilowatt = 1000 watts.
5639 watts/1000 = 5.639 kilowatts
