Answer:
14
Step-by-step explanation:
if z is 14 than z-2=12
because 14-2=12
No! 2^-3 is not equal to -3^2
Answer:

Option (C) is correct .
Step-by-step explanation:
As the expression given in the question as follows.

Now rationalize the expression.

Using the formula
a² - b² = (a - b) (a + b)
Using in the above


As i² = -1



Option (C) is correct .
Answer:
Proper fraction
Step-by-step explanation:
If the numerator is less than the denominator , then it is proper fraction.
Example : 
Answer:
7.5 = OM
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opposite side / hypotenuse
sin 30 = OM / UN
sin 30 = OM / 15
15 sin 30 = OM
7.5 = OM