Answer:
Two equivalent expressions: (31 + 71) + 29 = 31 + (71 + 29)
Total cost: $ 131
hope this helps! <3
Answer:
MaybeIf you do 12,000 times 5.5 and didved by 100?
Step-by-step explanation:
Answer:
$9.55
Step-by-step explanation:
152.80/8=19.10-what he makes per hour
19.10/2=9.55 what he makes for half an hour
Answer: The answer is 96 wizards.
Step-by-step explanation:
So what I like to do is fraction formatting.
you start with x/blank 
and 
you do cross multiply divide
and multiple 120 by 80(=9600) and divide by 100 (=96) because wizards are 20% less of the population than goblins, so they are equivalent to 80% of the goblins! Hope this helped!
Answer:
C. 0.5
Step-by-step explanation:
Since a coin has 2 sides and there is the same probability of getting either side, then each side has a 50% or 0.5 probability. Therefore, in order to calculate the expected value of one coin flip we need to multiply the value of each side by its probability and add those values together like so...
1 * 0.5 = 0.5
0 * 0.5 = 0
Now we add these values together...
0.5 + 0 = 0.5
Finally, we can see that the expected value of one coin flip is 0.5
