Answer:
Always
Step-by-step explanation:
Every square is a closed figure, and every square has 4 straight sides, so every square is a quadrilateral.
Answer:
D
Step-by-step explanation:
Under a clockwise rotation about the origin of 90°
a point (x, y ) → (y, - x ) , thus
X(- 1, - 3 ) → X'(- 3, 1 )
Y(0, 0 ) → Y'(0, 0 )
Z(1, - 3 ) → Z'(- 3, - 1 )
Answer:
x= 1/25
Step-by-step explanation:
Answer:
5 x^2 y (9 x y + 1)
Step-by-step explanation:
Factor the following:
45 x^3 y^2 + 5 x^2 y
Factor common terms out of 45 x^3 y^2 + 5 x^2 y.
Factor 5 x^2 y out of 45 x^3 y^2 + 5 x^2 y:
Answer: 5 x^2 y (9 x y + 1)
<span> tan(x)/ cos(x)-sec(x)
tanx/(cosx-1/cosx)
tanx/cos^2x-1)--------------------1-sin^2x=cos^2x
-tanx/sin^2x
-(sinx/cosx)/sin^2x
-1/sinxcosx
multiply 2/2
-2/2sinxcosx-------------sin2x=2sincosx
-2/sin2x------------------1/sinx=cosecx
-2cosec2x</span>
