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GaryK [48]
3 years ago
12

Totsaken sold half of his comic books and bought ten more. He now has 40. With how many did he begin?

Mathematics
2 answers:
AURORKA [14]3 years ago
8 0
The answer is 60 because

40-10*2=60

hope it helps
julia-pushkina [17]3 years ago
6 0
Okay, so first off, take ten away from 40. That gives you 30. Then, if you double that, it gives you 60. So, you can do half of 60 to get 30, and then add ten to get 40. So, he began with 60.
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Explain how you can use place-value patterns to describe how 50 and 5,000 compare.
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<span>=> 50 and 5000
Place value are very useful to compare given numbers. Place value gives ideas on how big the number is and helps you compare easily what is greater and lesser.

Let’s use the given number:
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5000 is 100 times greater than 50.
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Need help!
Maslowich
Answer: Choice D) |K| = 57

------------------------------------------------------

Explanation:

The notation |K| means "the number of items in set K". It is similar to the notation n(K). In this case, we simply add up all the values in the circle labeled K. There are four of these values which are 13, 8, 17, 19. Add up these values to get 13+8+17+19 = 57. So there are 57 items in set K.
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