Answer:
E. 4/6 = 18/x
Step-by-step explanation:
if 4 hours require 6 logs
then 18 hours require (x)logs
⇒4/6 = 18/x
answer is 4/6 = 18/x
Take a common factor of cos(x)
![\cos(x) (1 + 2 \sin(x) ) = 0](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%281%20%2B%202%20%5Csin%28x%29%20%29%20%3D%200)
then by zero multplication rules
![\cos(x) = 0](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%20%3D%200)
![x = \frac{\pi}{2} \: x = \frac{3\pi}{2}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B%5Cpi%7D%7B2%7D%20%20%5C%3A%20x%20%3D%20%20%5Cfrac%7B3%5Cpi%7D%7B2%7D%20)
and when
![1 + 2 \sin(x) = 0](https://tex.z-dn.net/?f=1%20%2B%202%20%5Csin%28x%29%20%20%3D%200)
so
![2 \sin(x ) = - 1](https://tex.z-dn.net/?f=2%20%5Csin%28x%20%29%20%3D%20%20-%201)
![\sin(x) = \frac{ - 1}{2}](https://tex.z-dn.net/?f=%20%5Csin%28x%29%20%20%3D%20%20%5Cfrac%7B%20-%201%7D%7B2%7D%20)
so
![x = \frac{3\pi}{2} - \frac{\pi}{3}](https://tex.z-dn.net/?f=x%20%3D%20%20%20%5Cfrac%7B3%5Cpi%7D%7B2%7D%20%20-%20%20%5Cfrac%7B%5Cpi%7D%7B3%7D%20)
and
Answer:i have no idea sry
Step-by-step explanation:
Answer:
300
Step-by-step explanation:
Multiply the length which is 30 cm by 10 to give you the length in mm.
Answer:
3-1=2
Step-by-step explanation:
well since there are 2 negative inside the brackets, then that mean the 1 is positive. therefore it is 3-1