Which of the equations are true identities? A. (y 6)(y-7) – 42 = y=y
B. (x + 3)(= 8) = 72 = 5.7

Find two numbers if their sum is 91 and the ratio is 6: 7?

Im so bad at fractions they are not my best math thing to work on

Aquality characteristic of new iphone x made at the amsterdam plant at apple computers has a manufacturing specification (in mm) of 0.200 +/- .07. historical data indicates that if the quality characteristic takes on values greater than 0.27 or smaller than 0.13 the component fails at a cost of20.19. based on these data: determine the taguchi loss function (must show work) calculate an estimated loss for a quality characteristic of .30 calculate an estimated loss for quality characteristic of .40.