Yes, it's an identity because remember sin 6x would be (3x + 3x)= which would make it 2 sin 3x....concluding the equation should be an identity. :)
Hoped this helped :)
You order the y-values from greatest to least, which are 2, 2, 3, and 4. You don't need to duplicate the same y-values, so the range is {2, 3, 4}
A square with a side length of 4 would have an area of 16 because 4x4 equals 16.
79 is 4 below 83 so her next grade needs to be 4 above in order to get an average of 83. The answer is 87.
x = 40/2 = 20 i think thsts the answer if I was wrong you have to right to slap my face