Answer:
2(x^2)-1
Step-by-step explanation:
The square of a number is just the number squared. We don't know what the number is so I will just say it is x. So we have 2 times x^2. Then we have to minus 1 from that. So 2(x^2)-1.
Hope this helps! :D
Answer:
tenes vieja
Step-by-step explanation:
atu vieja se lo voy a meter y la va a salir por la boca xd xd xd xd xd xd
First, we have to find the length of each side of triangle. Equilateral triangle means 3 sides r in same length, so each side will be 21 ÷ 3 = 7
Now we need to calculate the height of the triangle. We can do this by Pythagoras theorem
Let the height be h
(7/2)^2 + x^2 = 7^2
The area should be 6.0621778265
Or u can say 6.06 corrected to 3 sig fig
Answer:
B
Step-by-step explanation:
A square root can‘t be negative so
x -1 ≥ 0
x ≥ 1
We can say that the domain is
[1 ; +oo)
Answer:
I am not sure on this one, sorry :(
Step-by-step explanation:
