Complete the square since can't factor
2/2=1
add 1 to both sides
x²+2x+1-6=1
factor perfect square
(x+1)²-6=1
add 6 to both sides
(x+1)²=7
sqrt both sides
x+1=+/-√7
minus 1 both sides
x=-1+/-√7
so x=-1+√7 or x=-1-√7
It is a valid sample because the first eight people were selected to participate? (the first one)
Answer:
14.7%
Step-by-step explanation:
GIVEN: Felicia bought a jackhammer priced at
. The total price, including sales tax, was
.
TO FIND: What was the sales tax percentage.
SOLUTION:
Price of jackhammer 
Total price including sales tax 
Total sales tax on jackhammer 
Total sales tax percentage 
Hence the total sales tax percentage on jackhammer is 14.7%
Would it be 2:1? I really don't know, I haven't learned that yet, sorry
$ 295 because you can multiple 15×19.7 is =295.5