6/16
3/8
Hope this helps :)
6:45pm. because from 4 to 12 would be 4 hours then subtract 5 more hours leaves you at 7:25 pm. now subtract 45 from that which leaves you at 6:45 pm.
Answer:
53.8°
Step-by-step explanation:
Use cosine law
67² = 72² + 76² - 2(72)(76)cosX
cosX = 719/1216
X = 53.75190075
If you multiply -17 by 6 you'll get -102, so I guess you should multiply the whole equation by 6, and youll get: 18y= -12x-102
Not easy:
- 4 < x^4 + 4x^2 ---> 0 < x^4+4x^2+4 = (x^2+2)^2, so it is always positive. Always satisfied. Curious ...
Now the other one:
x^4+4x^2<21 --> x^4+4x^2-21 < 0 --> (x^2+2)^2 - 25 < 0
(x^2+2)^2<25 ->>> x^2+2 < 5 ---> x^2 <3,
So -sqrt(3)<x<sqrt(3) is the answer! Brainliest?