The cost of the T-shirt is the difference between the total cost and the cost of the sweatshirt.
The T-shirt cost C. $21.10.
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?
Answer:
6 11/24
Step-by-step explanation:
7 3/24 - 16/24
6 27/24 - 16/24
6 11/24
Pretty sure ( -2,-7) because from -1 you go over one then each y is going down 3 so -4 - 3 is -7
#7. C #10. C #11. A #12. C
