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Zepler [3.9K]
3 years ago
5

Sharon is baking cookies for her friend's birthday. She always uses 2 cups

Mathematics
1 answer:
Alinara [238K]3 years ago
4 0

how many cookies? for 2 cups

Step-by-step explanation:

2

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7x+16=-58
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its 10.6 units long
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Talja [164]
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4 years ago
Prove that C(50,3) + C(50,4) = C(51,4)
valkas [14]

By definition of the binomial coefficient,

C(n,k) = \dfrac{n!}{k!(n-k)!}

so we have

C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)

as required.

5 0
2 years ago
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Zielflug [23.3K]
  • 2moles of NaCl produced by 2 moles of NaClO_3
  • Let required moles be x .

\\ \bull\sf\longmapsto 2:2=3:x

\\ \bull\sf\longmapsto \dfrac{2}{2}=\dfrac{3}{x}

\\ \bull\sf\longmapsto \dfrac{3}{x}=1

\\ \bull\sf\longmapsto x=3mol

8 0
3 years ago
Read 2 more answers
Find f(-2) for f(x) = 3.2.<br> O A. 2/1<br> OB.<br> 36<br> O C. -36<br> OD. -12<br> 3/4
valina [46]

Answer:

3/4 (A)

Step-by-step explanation:

replace x with -2 in the function

3 · 2^-2  = 3 · 0.25

3 · 0.25 = 0.75

0.75 = 3/4

3 0
2 years ago
Read 2 more answers
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