Answer:-14
Step-by-step explanation:
(1-√-4)(-3-√-25)
[(1*-3)-(1*√-25)-(√-4*-3)-(√-4*√-25)]
(-3)-(-5)-(6)-(10)
-14
The answer will be a) 11 b) 9
Answer:
6 
Step-by-step explanation:
you are adding 3 1/4 to 3 1/4 which is 6 2/4 or 6 1/2
or you can multiply 13/4 by 2 to get 26/4 or 13/2 which, again, is 6 1/2
Answer:
(a)
Step-by-step explanation:
Using Pythagoras' theorem
11² + 12² ? 16²
121 + 144 ? 256
265 > 256 ⇒ acute triangle
If the left side < right side then obtuse
If the left side = right side then right