Answer:
-18
Step-by-step explanation:
Multiply -11 by 3.
Add -33 to 15.
Answer -18
Answer:
Because the product is always non-termination,non-repeating decimal.
Step-by-step explanation:
If we have
is irrational;
is rational such that
, then
is irrational.
A way to represent this is:

Note that we have a contradiction, because
is not a rational number, as I stated in the beginning. Therefore, ab is irrational.
Answer:
A. 30 adults; B. 24 not dolls
Step-by-step explanation:
A.

B.
If five-eighths of the prizes were dolls, then three-eighths of the prizes were not dolls.

It's factorable when c ∈ {5,8,9}
Answer: We can find out the missing statement with help of below explanation.
Step-by-step explanation:
We have a rectangle ABCD with diagonals AC and BD ( shown in given figure.)
We have to prove: Diagonals AC and BD bisect each other.
In triangles, AED and BEC.
( By alternative angle theorem)
( Because ABCD is a rectangle)
( By alternative angle theorem)
By ASA postulate,
By CPCTC,
and 
⇒ BE= ED and CE=EA
By the definition of bisector, AC and BD bisect each other.