12) Angle ACD= Angle ABC+ Angle CAB ====> You MAY end here
That is, Angle ACD= 132+21
Angle ACD= 153
13) Angle ABC+ Angle BAC= Angle ACD====> You MAY end here
That is, Angle ABC +16=143
-16= -16
Angle ABC=127
C the horizontal line represents x and it goes to -1 you place your coordinates as (x,y)
Answer: the answer is C
Well if you follow PEMDAS you would have to do the parentheses first but you can’t subtract 18 from a variable (Z) so then you move on to the 2 and you have to do the opposite so you don’t multiply both sides by 2 you have to divide both sides by 2. And that’s how u get C
Answer:
15
Step-by-step explanation:
1/3*3=1*5=5
so
3*5=15
Answer:
x^2 + 2x^2 + 1 = x^4 + 2x^2 +1
Step-by-step explanation:
pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs
substitute what we know
(x^2 -1)^2 + (2x)^2 = (x^2+1)^2
FOIL
(x^2 -1)^2 = (x^2-1 ) (x^2-1) = x^4 -x^2 - x^2 +1 = x^4 -2x^2 +1
(2x)^2 = 4x^2
(x^2+1)^2 = (x^2+1 ) (x^2+1) = x^4 +x^2 +x^2 +1= x^4 + 2x^2 +1
substitute these back in
x^4 -2x^2 +1 +4x^2 = x^4 + 2x^2 +1
combine like terms
x^2 + 2x^2 + 1 = x^4 + 2x^2 +1
Since the left and right side are equal, this is a right triangle