cos 2 x = cos² x - sin² x = 1 - sin² x - sin² x = 1 - 2 sin² x.
Answer: A ) 1 - sin² x and D ) cos² x - sin² x
Thank you.
The total price of the cinnamon with tax is $4.61
Step-by-step explanation:
Cost of the cinnamon= $4.25
Tax = 8.625%
Total price of the cinnamon= 4.25 + (8.625% of 4.25)
= 4.25 + (8.625/100) 4.25
= 4.25 + (0.36)
= $4.61
The total price of the cinnamon with tax is $4.61
Answer:
negative
Step-by-step explanation:
So a positive Integer has a negative and a vice versa. Notice that if the first number was negative in a difference between numbers with different signs, the answer will be negative. if the first number was positive, the answer will be positive.
Answer:
He is 2 years old.
Step-by-step explanation:
She is 22, in 8 years she will be 30. 30 is 3×10. At that time, her brother will be 10; that is 8 years from now. So now, the little brother is 10-8 = 2 years old.
If you must show algebra work:
x = brother's age now.
x+8=brother's age in 8 years.
YingYu's age in 8 years = 3 × brother's age in 8 years
22+8 = 3(x+8)
30 = 3x +24
6 = 3x
2 = x