X + x + x + x - 20 is equivalent to 4x - 20 because you can add the like terms, or the x's.
False
because tan^2 45 = 1^2 = 1
and sec^2 x = 1/ cos^2 45 = (sqrt2)^2 = 2
so the sum = 3
-1(5x+1)
-5x-1
the (-) in front is just a short way to put (-1)
Answer:
88
Step-by-step explanation:
hello,
we need to replace x by 6 and y by -10 so it comes
3*(6)-7*(-10)
= 18 + 70 = 88
hope this helps
