PLS HELP IM TIMED!! ILL MARK U BRAINLIEST
2 answers:
Answer:
D
Step-by-step explanation:
7x² - 56x = 63 ( divide through by 7 )
x² - 8x = 9
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 4)x + 16 = 9 + 16
(x - 4)² = 25 ( take square root of both sides )
x - 4 = ± = ± 5 ( add 4 to both sides )
x = 4 ± 5
Then
x = 4 - 5 = - 1
x = 4 + 5 = 9
solutions are (- 1, 9 ) → D
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Answer:
Step-by-step explanation:
The numerator of the rational expression the money he earned for 'x' hours
The rate at which William is paid for each hour in excess of 40 hours 24.
x = 50 hours = (40 + 10 ) hours
The amount paid for excess 10 hours = 24 *10 = 240
Total amount earned for the week = 480 + 240 = 720