Answer: 170
Step-by-step explanation:
First, we need to do multiplication.
-50 x -2 = 100 because 2 negatives make a positive.
70 + 100 = 170.
Answer:
Step-by-step explanation:
<u>Standard equation of parabola is:</u>
The parabola is opening upward if a > 0 and opening downward if a < 0
The given parabola has a = 3 > 0, therefore it is opening upward
Taking Rhs
1/2 [sin(x+y)+ sin (x-y)]
using sinA + sin B = 2 cos (A+B)/2 cos( A - B)/2
1/2 [ 2 Cos ( x+y+x-y)/2 . Cos (x+y-x+y)/2]
=Cos 2x/2. Cos 2y/2 = Cos x . Cos y
Hence true