Answer:
x = 5 or x = 1
Step-by-step explanation:
x² - 6x + 7 = 0
x² - 6x = -7
x² - 6x + 9 = -7 + 9 1/2 of the x term than square it and add it the both sides.
(x - 3)(x - 3) = 2
( x -3)² = 2
= 
(x - 3) = ± 2
x - 3 = 2 or x - 3 = -2
x = 5 or x = 1
Answer:
93
Step-by-step explanation:
(85 + 92 + 87 + 93 + 90 + x)/6 = 90
(447 + x)/6 = 90
multiply both sides of the equation by 6:
447 + x = 540
subtract 447 from both sides:
x = 93
Answer: its A ........................22 +/- (3(4)/sqrt 144) = 22 +/- 1 = 21 - 23
Step-by-step explanation:
Answer:
20 percent
Step-by-step explanation:
50 - 30 = 20 percent
There's 30 gallons, so what you have to do is multiply 30 times 3 because every gallon is $3. 30 gallons multiplied by $3 equals $90 ( 30 x $3 = $90 )
