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Question Number 178059 Answers: 1 Comments: 1

Question Number 178054 Answers: 2 Comments: 3

Mr. w wants to distribute n+1 different prizes to n friends so that each one gets at least one prize, how many results of this process. I hope to be that one gets 2

$${Mr}.\:{w}\:{wants}\:{to}\:{distribute}\:{n}+\mathrm{1}\:{different}\: \\ $$$${prizes}\:\:{to}\:{n}\:{friends}\:{so}\:{that}\:{each}\:{one}\:{gets} \\ $$$$\:{at}\:{least}\:{one}\:{prize},\:{how}\:{many}\:{results} \\ $$$$\:{of}\:{this}\:{process}.\:{I}\:{hope}\:{to}\:{be}\:{that}\:{one}\:{gets}\:\mathrm{2} \\ $$$$ \\ $$

Question Number 178052 Answers: 0 Comments: 0

Question Number 178051 Answers: 0 Comments: 0

Question Number 178037 Answers: 1 Comments: 1

Question Number 178032 Answers: 0 Comments: 3

• D={z : ∣z∣<1} • H (A→B) denotes the set of holomorfic functions from A to B • We define: W={f∈H (D→R) : ∣∣f∣∣_W <∞ } where ∣∣ ∙ ∣∣_W : { (W,→,R_+ ),(f, ,(Σ_(n=0) ^∞ ((∣f^((n)) (0)∣)/(n!)))) :} Let f∈W Show that ∀g∈H ( f(D^ )), g○f∈W tip: show that ∣∣h∣∣_W ≤cste × Sup_(z∈D) {∣h(z)∣+∣h′′(z)∣} and that W is an algebra then, re−wright f=f_1 +f_2 with f_2 : z Σ_(n=N) ^∞ ((f^((n)) (0))/(n!))z^n with N great enough to make sure that Σ_(n=0) ^∞ ((g^((n)) (0))/(n!))f_2 ^( n) is well defined and converges over W. ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙

Question Number 178039 Answers: 0 Comments: 0

Question Number 178026 Answers: 1 Comments: 2

Question Number 178021 Answers: 1 Comments: 0

Let S={1, 2, 3, 4, 5} , we want to make a group H of numbers have the following properties: 1. Each number has different digits and taken from S 2. Each number is greater than 20 000 3. None of them is multiple of five How many items of H?

$$ \\ $$$${Let}\:{S}=\left\{\mathrm{1},\:\mathrm{2},\:\mathrm{3},\:\mathrm{4},\:\mathrm{5}\right\}\:,\:{we}\:{want}\:{to}\:{make}\:{a}\: \\ $$$$\:{group}\:{H}\:{of}\:{numbers}\:{have}\:{the}\:{following}\: \\ $$$$\:{properties}: \\ $$$$\:\mathrm{1}.\:{Each}\:{number}\:{has}\:{different}\:{digits}\:{and} \\ $$$$\:{taken}\:{from}\:{S} \\ $$$$\:\mathrm{2}.\:{Each}\:{number}\:{is}\:{greater}\:{than}\:\mathrm{20}\:\mathrm{000} \\ $$$$\:\mathrm{3}.\:{None}\:{of}\:{them}\:{is}\:{multiple}\:{of}\:{five} \\ $$$$ \\ $$$${How}\:{many}\:{items}\:{of}\:{H}? \\ $$

Question Number 178019 Answers: 0 Comments: 0

Give the IUPAC name of the following (a)H_3 PO_4 (b)H_2 CO_3 (c)HCIO (d) HNO_2 (e)HNO_3 (f)Al_2 (SO_4 )_3 (g)Ca_3 (PO_4 )_2 (h)MgO_2 (i)HF

Question Number 178018 Answers: 2 Comments: 0

8.1g of a compound Q contain magnessium and oxygen.if mass of magnessium is 4.9g Determine the empirical formular of compound Q. [given Mg=24 O=16]

$$\mathrm{8}.\mathrm{1g}\:\mathrm{of}\:\mathrm{a}\:\mathrm{compound}\:\mathrm{Q}\:\mathrm{contain} \\ $$$$\mathrm{magnessium}\:\mathrm{and}\:\mathrm{oxygen}.\mathrm{if} \\ $$$$\mathrm{mass}\:\mathrm{of}\:\mathrm{magnessium}\:\mathrm{is}\:\mathrm{4}.\mathrm{9g} \\ $$$$\mathrm{Determine}\:\mathrm{the}\:\mathrm{empirical}\:\mathrm{formular} \\ $$$$\mathrm{of}\:\mathrm{compound}\:\mathrm{Q}. \\ $$$$\left[\mathrm{given}\:\mathrm{Mg}=\mathrm{24}\:\:\:\mathrm{O}=\mathrm{16}\right] \\ $$

Question Number 178013 Answers: 4 Comments: 0

Using Electronic diagrams show the bonding in the following (a)Magnesium chloride (b)Sodium chloride

$$\mathrm{Using}\:\mathrm{Electronic}\:\mathrm{diagrams}\:\mathrm{show} \\ $$$$\mathrm{the}\:\mathrm{bonding}\:\mathrm{in}\:\mathrm{the}\:\mathrm{following} \\ $$$$\left(\mathrm{a}\right)\mathrm{Magnesium}\:\mathrm{chloride} \\ $$$$\left(\mathrm{b}\right)\mathrm{Sodium}\:\mathrm{chloride} \\ $$

Question Number 178011 Answers: 3 Comments: 0

Hydrocarbon contain 80% by mass of carbon and the rest is for hydrogen.calculate the empirical formula of the compound [given H=1 C=12]

$$\mathrm{Hydrocarbon}\:\mathrm{contain}\:\mathrm{80\%}\:\mathrm{by} \\ $$$$\mathrm{mass}\:\mathrm{of}\:\mathrm{carbon}\:\mathrm{and}\:\mathrm{the}\:\mathrm{rest} \\ $$$$\mathrm{is}\:\mathrm{for}\:\mathrm{hydrogen}.\mathrm{calculate}\:\mathrm{the} \\ $$$$\mathrm{empirical}\:\mathrm{formula}\:\mathrm{of}\:\mathrm{the}\:\mathrm{compound} \\ $$$$\left[\mathrm{given}\:\mathrm{H}=\mathrm{1}\:\:\mathrm{C}=\mathrm{12}\right] \\ $$