Answer:
{HH, HT, TH, TT}
Step-by-step explanation:
The set of all possible outcomes in tossing a coin twice is;
{HH, HT, TH, TT}
In the first toss the coin may land Heads. In the second toss the coin may land Heads or Tails. This can be represented as;
HH, HT
Heads in the first and second tosses. Heads in the first toss followed by a Tail in the second toss.
In the first toss the coin is also likely to land Tails. In the second toss the coin may land Heads or Tails. This can be represented as;
TH, TT
Tails in the first toss followed by a Head in the second toss. Tails in the first and second tosses.
Combining these two possibilities will give us the set of all possible outcomes in tossing a coin twice is;
{HH, HT, TH, TT}
Answer: x=1 or x=-3
Step-by-step explanation:
Quadratic formula is 
a=1 b=2 c=-3
Substitute
8.
Adding four and subtracting one is the same as adding three. So, to see if a number can be in this pattern, subtract five and check if the result is a multiple of three. If it is, it can be in the pattern.
Fun fact: to check if something is a multiple of three, add all the digits up and see if that is a multiple of three. If you don’t know, repeat the process of adding the digits.
Answer: A) 2, 7, 9
<u>Step-by-step explanation:</u>
In a sudoku puzzle, there are three rules:
- Each vertical line must contain the numbers 1 - 9, with no duplicates
- Each horizontal line must contain the numbers 1 - 9, with no duplicates
- Each 3 x 3 box must contain the numbers 1 - 9, with no duplicates.
Using logic:
2 must go in the 1st box. It cannot go in the 2nd or 3rd shaded square because 2 is already in that 3 x 3 box.
That leaves the 2nd and 3rd shaded square.
9 cannot go in the 2nd shaded square because 9 is already in that vertical line.
Therefore, 9 must go in the 3rd shaded square.
That leaves the 2nd shaded square.
7 must go in the 2nd shaded square because it is the only number remaining (2 and 9 have already been placed in the other squares).
The value is five hundred
