The pythagorean theorem states that a^2+b^2=c^2.
3^2 is 9.
9+9=18
The square root of 18 is approximately 4.24.
a.

b.

c.4.24
[6, ∞) , x >= 6 so
answer is D. last one
6<= x < ∞
Answer:
x = 4
Step-by-step explanation:
Cross multiply:
21*2 = 14(x - 1)
42 = 14x - 14
14x = 56
x = 4
Hi! They are- A,C,E, and F sorry if I’m wrong! Have a great day! :)