Question

Which expression is equivalent to 9 x squared minus 2 y + 3 x squared minus 3 y?
6 x squared minus y + 6 x squared minus 5 y
6 x squared minus y + 3 x squared minus 4 y
10 x squared minus 4 y + 2 x squared minus y
11 x squared + 2 y + x squared minus 3 y

Answer 1

Answer:

b) 1% of 1 hours = 1% of 60 minutes = 1% of (60 x 60) seconds = \frac{1}{100}\times60\times60=6\times6=36 seconds.

Answer 2

Answer:

Step-by-step explanation:

Given that,

9x² - 2y + 3x² - 3y =

= ( 9x² + 3x² ) + ( - 2y - 3y ) (∵ adding like terms )

= 12x² + ( -5y ) (∵ adding : -2y -3y = -5y )

= 12x² - 5y is the answer. ( + × - = - )