The sum of two numbers is 60. the greater number is 6 more than the smaller number. which equation can be used to solve for the smaller number?

x + (x + 6) = 60
x − (x + 6) = 60
x(x + 6) = 60
x(x− 6) = 60

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left