#3. the probability of spinning "rock" is 25% or 1/4 so we can use this probability to predict the number of times we would expect to get "rock" in 80 spins as follows:
25% of 80 = .25(80) = 20 So how likely is it we spin 20 'rock' out of 80 spins? At 25%, not very likely..
#4.
A. True
B. True
C. False, the theoretical probability of make make using the spinner is

or about 56%
Answer:
D
Step-by-step explanation:
becuase the -3 is going threw the dots
Answer:
-6r -5
Step-by-step explanation:
-3r+7-3r-12
Combine like terms
-3r -3r +7-12
-6r -5
Answer:
-1.85
Step-by-step explanation:
On TI-84
invT((1-0.92)/2), 19)
invT(0.04,19)