A
x=y^2-9
x+9=y^2
square root both sides
+-sqrt(x+9)
The answer for the exercise shown above is the option B, which is: 
The explanation is shown below:
To list the powers of the polynomial given in the problem above in descending order, you must write the terms from the highest degree to the lowest degree. You have that the highest degree is

and the lowest degree is

(Because

. Therefore, you have that the correct option is the option B.
Answer:
C. (0,b)
Step-by-step explanation:
Answer:
x-4=19
Step-by-step explanation:
Hope that helps!
Answer:
(A) There should have been 5 outcomes of HT
(B) The experimental probability is greater than the theoretical probability of HT.
Step-by-step explanation:
Given
-- Sample Space
--- Sample Size
Solving (a); theoretical outcome of HT in 20 tosses
First, calculate the theoretical probability of HT


Multiply this by the number of tosses


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Solving (b); experimental probability of HT
Here, we make use of the table


---- Experimental Probability
In (a), the theoretical probability is:

---- Experimental Probability
By comparison;
