From symmetry of sin(x) about pi/2, we know that sin(x)=sin(pi-x).
Therefore
sin(x)+sin(pi-x)=sin(x)+sin(x)=2sin(x).
A. A square is a special type of parallelogram, so every square is a parallelogram. A. is true.
B. Every parallelogram has two sets of opposite sides parallel, but not all angles are right angles. Only some parallelograms are rectangles, not all. B. is false.
C. A parallelogram with 4 congruent sides is a rhombus. A rhombus is a special type of parallelogram, so every rhombus is a parallelogram. C. is true.
D. A rectangle is a special type of parallelogram, so every rectangle is a parallelogram. D. is true.
(6•x) + 7 = 8
6x + 7 = 8
6x = 1
X = 1
Answer:
Step-by-step explanation:
9/2 / 8/3
9/2 x 3/8
27/16 = 1 13/16
