Answer:
She needs 153
Step-by-step explanation:
Let x be the score in the 4th game
To find the average add up the scores and divide by the number of scores added
(149+162+152+x) /4 = 154
Multiply each side by 4
(149+162+152+x) /4 *4= 154*4
(149+162+152+x) = 616
Combine like terms
x+463=616
Subtract 463 from each side
x+463-463 = 616-465
x = 153
Answer:
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Answer:
Ok so this concept is kind of hard to explain, but basically the two equations are equal because you are adding 9/4 and then subtracting 9/4, so you just end up with 0. The reason you do that is so you can make the (x + 3/2)^2 part, which you wouldn't be able to do without the 9/4/
The first two are correct
Answer: D
Step-by-step explanation: yes, because with each simulation, as the number of trials increase, the experimental probability gets closer and closer to the theoretical probability of
1/4.
