Distribute the negative sign to the 4x and 11 making it 3x+5y-4-4x-11 and combine like terms
Answer:
x = 0 , 3
Step-by-step explanation:
x = 0 ; x - 3 = 0
x = 0 ; x = 3
The function is: f ( x ) = - x² + 60 x - 116 is in the form: f ( x ) = a x² + b x + c
Part A:
x = -b / 2 a = - 60 / ( - 2 ) = 30
Then we will charge it into the function:
f ( 30 ) = - 30² + 60 · 30 - 116 = - 900 +1,800 - 116 = 784
The vertex is ( 30, 784 ).
It means that the maximum profit is $784, when 30 windshields are repaired.
Part B:
x 1/2 = ( -60 +/- √(3600 - 464 )/ (- 2 ) = ( -60 +/- 56 ) / ( - 2 )
x 1 = 2, x 2 = 58
It means that a shop has to repair at least 2 windshields and not more than 58 windshields for making a profit.
Answer:
275.125
Step-by-step explanation:
there you go
The missing number would be 28. 7*4=28.
