Since there are 52 cards in a deck of cards <span>and that includes four aces. so since there a four aces, then there is a 4/52 or a 1/13(simplified)chance of randomly </span><span>picking an ace.
Hope this helps!!
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X=12 do you need an explanation?
Answer:
The estimated impact of the experiment of offering test preparation classes is:
= 8 scores (in performance improvement).
Step-by-step explanation:
Average standardized-test score for the first 10 high schools = 69
Average standardized-test score for the second 10 high schools = 70
After 6 months:
Average standardized-test score for the first 10 high schools offered test preparation classes = 78
The change in the average standardized-test score for the first 10 high schools = 9 (78 - 69)
Average standardized-test score for the second 10 high schools not offered test preparation classes = 71
The change in the average standardized-test score for the second 10 high schools not offered the prep = 1 (71 - 70)
The estimated impact of the experiment of offering test preparation classes is:
= 9 - 1
= 8.
Answer:
Step-by-step explanation:
We simply move all the terms that do NOT contain 
and then we solve it from there. And that's how we got our answer.
