A coin is tossed two times then a day of the week is randomly selected what is the probability of getting heads each time and day is that start with the letter S Please help

Probability that the coin lands heads on the first toss is [math] \frac {1} {2} [/math] ... Expect the answer to be less than the individual probabilities of either event A or ... What is the probability of obtaining 3 heads when a fair coin is tossed 7 times? ... that outcome, your second flip has the coin starting with the heads side up.

Step-by-step explanation: Probability that the coin lands heads on the first toss is [math] \frac {1} {2} [/math] ... Expect the answer to be less than the individual probabilities of either event A or ... What is the probability of obtaining 3 heads when a fair coin is tossed 7 times? ... that outcome, your second flip has the coin starting with the heads side up.

12 starfish

Step-by-step explanation:

Create a system of equations where x is the number of starfish he has and y is the number of spiders he has:

x + y = 19

5x + 8y = 116

Solve by elimination by multiplying the top equation by -8:

-8x - 8y = -152

5x + 8y = 116

Add these together and solve for x:

-3x = -36

x = 12

So, he has 12 starfish.