Answer:
third option
Step-by-step explanation:
four times a number: 4n
add 8 to it: 4n + 8
All of this equals to -12.
Hence: 4n + 8 = -12
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
Answer:zero
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
The answer is 7,069.92. You can get this by substituting the known values into the given equation, or I = 22660*13%*2.4. Then, multiply. Make sure to convert 13% to a decimal by moving the decimal point 2 places to the left, which will give you 0.13.
