Answer:
x = ±
Step-by-step explanation:
Given
x² - 7x + 9 = 0 ( subtract 9 from both sides )
x² - 7x = - 9
Solve using the method of completing the square
add ( half the coefficient of the x- term)² to both sides
x² + 2( - )x + = - 9 +
(x - )² = ( take the square root of both sides )
x - = ± = ± ( add
x = ± =
Answer:
multiply either sides by 3:
divide either sides by πr² :
Step-by-step explanation:
Lets consider the unknown number as x
according to the question,
6-x= 5(x+2)
6-x= 5x+10
-x-5x=10-6
-6x=4
x=4/-6= 2/-3
x= -2/3
<em>hope this helps </em>
<em>please mark me as brainliest.</em>
Answer:.40 cents
Step-by-step explanation: divide the total cost by the amount of items you have.
Answer: 3+3=9
⇔
Step-by-step explanation: three fingers to start add three fingers total of nine