Answer: -13
Step-by-step explanation:
= 4*(1/4) - 8(2-1/4)
= 1-8(7/4)
= 1-14
= -13
Is the number 30?
(Extra words because I can't post without them)
Answer:
Following are the solution to the given choices:
Step-by-step explanation:
Using chebyshev's theorem
:

In point a)



In point b)

In point c)

In point d)
using standard normal variate

In 5 years, the price increased about 30%.
I am not good at perentages, so correct me if I'm wrong. Also this is an estimation, not the exact percentage.
Answer:
+4
Step-by-step explanation:
any opposite of a natural number is created with a "minus"
- (-4) = +4