Answer:
The trial provides enough evidence that the probability of obtaining heads is less than 0.50 and that the coin is unfair.
Step-by-step explanation:
The explanation is in the picture
Since (78-23) is in the bracket, you need to perform the operation of minus first.
that get you with
-56x(55)÷4
and then you just do it step by step
-56x55 = -3080
-3080÷4 = -770
Answer:
16
Step-by-step explanation:
Substituting 16 will make the expression valid and correct since the square of -4 is 16 and the addition of it is -8.
Option A. would be the best answer.
Hope this helps ;)