Answer:

Step-by-step explanation:

For positive rate of change 

Answer:
true
Step-by-step explanation:
1/2 (sin(x+y)+sin(x-y))
= 1/2 (sin x cos Y + cos x sin y + sin x cos y - cos x sin y)
= 1/2 * 2 sin x cos y
= sin x cos y
The expression is true.
sorry stranger but you can't use tiles if you want to go and count your tiles on the floor of your house
50*8=400
400+175=575
it subtracted 575 on the last round