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2 years ago

HELP PLEASE THERE ARE TWO MORE.

Mathematics

2 answers:

Dafna11 [192]2 years ago

8 0

Answer: y + x = ?

y - x = ?

y times x = ?

y / x = ?

Step-by-step explanation: If 1 is correct tell me, if none are, i will edit :D

-BARSIC- [3]2 years ago

6 0

40- 45[43x34] then divide iy

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John haf 99 more stickers than Sally. Sally then gave John 36 more stickers. How many more stickers would John have than Sally i

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3 years ago

An English teacher needs to pick 9 books to put on his reading list for the next school year, and he needs to plan the order in

Nikitich [7]

Answer: $4.37\times10^3$

Step-by-step explanation:

Given : Number of choices for novels = 4

Number of choices for plays = 6

Number of choices for poetry books = 5

Number of choices for nonfiction books = 5

Total books =4+6+5+5=20

If he wants to include all 4 novels, then the number of books left to select = 9-4=5

Remaining choices for books = 20-4=16

Number of combinations of n things taking r at a time : $\dfrac{n!}{r!(n-r)!}$

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$^4C_4\times^{16}C_5\\\\=\dfrac{4!}{4!(4-4)!}\times\dfrac{16!}{5!(16-5)!}\\\\=(1)\times\dfrac{16\times15\times14\times13\times12\times11!}{120\times11!}\\\\=4368=4.368\times10^3\approx4.37\times10^3$

Hence, the required answer is $4.37\times10^3$ .

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2 years ago

Help please! ASAP if you can =) Picture attatched

zloy xaker [14]

It would be D

Hope this helps! :)
~Zain

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3 years ago

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