Answer:
The answer is a. cos2x - sin2x - sin x. Use the rule: cos2x = (cos^2)x - (sin^2)x. So, substitute cos2x in the expression: cos2x - sinx = ((cos^2)x - (sin^2)x) - sinx = (cos^2)x - (sin^2)x - sinx. Therefore, choice a. is correct choice.
Answer:
24cm
Step-by-step explanation:
6+6+6+6=24
12 is half so you should add 12 or multiply by 2
The given trinomial can be factored using the factorization method.
x² -3x - 40
= x² -8x + 5x - 40
= x(x-8) + 5(x-8)
= (x-8)(x+5)
Thus, (x-8)(x+5) is the factored form of the polynomial.
So the correct answer is option C
Answer: 60
Step-by-step explanation: 1/4 of 96 is 24 so you subtract that and get 72. And 1/6 of 72 is 12 and you subtract that leaving you with 60 to remain.
