Answer:
800 dollars
Step-by-step explanation:
Answer: A, B, F
Explanation:
- A is true because (1/2 x 6 x 8) x 2 is equivalent to 48 square inches.
- B is true because (18 x 6) x 3 is equivalent to 324 square inches.
- F is true because 324 + 48 is equivalent to 372 square inches.
NOTE: I hope this helped, a brainliest would be much appreciated! :)
All you need to do is subtract 4x from both sides.
-4x+y=-1
13pi/12 lies between pi and 2pi, which means sin(13pi/12) < 0
Recall the double angle identity,
sin^2(x) = (1 - cos(2x))/2
If we let x = 13pi/12, then
sin(13pi/12) = - sqrt[(1 - cos(13pi/6))/2]
where we took the negative square root because we expect a negative value.
Now, because cosine has a period of 2pi, we have
cos(13pi/6) = cos(2pi + pi/6) = cos(pi/6) = sqrt[3]/2
Then
sin(13pi/12) = - sqrt[(1 - sqrt[3]/2)/2]
sin(13pi/12) = - sqrt[2 - sqrt[3]]/2
