Jane has $23 to spend. She buys lunch for $5.47 and a belt for $8.95. Jane then buys a necklace with the remaining money. How mu
ch does Jane spend buying the necklace?
A. $3.48
B. $8.58
C. $14.05
D. $14.42
A. $3.48
B. $8.58
C. $14.05
D. $14.42
1 answer:
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Answer:
B
Step-by-step explanation:
x² - 12x + 11 = 0 ( subtract 11 from both sides )
x² - 12x = - 11
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 6)x + 36 = - 11 + 36
(x - 6)² = 25 ( take square root of both sides )
x - 6 = ± = ± 5 ( add 6 to both sides )
x = 6 ± 5
Then
x = 6 - 5 = 1 ⇒ (1, 0 )
x = 6 + 5 = 11 ⇒ (11, 0 )
