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Ilia_Sergeevich [38]
3 years ago
15

PLEASE HELP!! what is the explicit formula for this sequence -7, -4, -1, 2, 5

Mathematics
1 answer:
trasher [3.6K]3 years ago
6 0

Answer:

The explicit formula for the given expression is a_n=-10+3n.

Step-by-step explanation:

The given sequence is

-7, -4, -1, 2, 5

The difference between two consecutive terms is same, therefore the given sequence is an arithmetic sequence.

The first term of the given AP is -7 and the common difference is

-4-(-7)=-4+7=3

The explicit formula for an AP is

a_n=a+(n-1)d

Where, a is first term, d is common difference and n is number of terms.

Substitute a=-7 and d=3 in the above equation.

a_n=-7+(n-1)3

a_n=-7+3n-3

a_n=-10+3n

Therefore the explicit formula for the given expression is a_n=-10+3n.

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A firm that stocks lightbulbs gathers the following information: Demand = 19,500 units per year, Ordering cost = $25 per order,
vredina [299]

Answer:

Step-by-step explanation:

Demand = 19,500 units per year (D)

Ordering cost = $25 per order (O)

Holding cost = $4 per unit per year (C)

a) EOQ=\sqrt{ \frac{2\times D\times O}{C}}

   EOQ=\sqrt{ \frac{2\times 19,500\times 25}{4}}

   = \sqrt{\frac{975000}{4}}

   = \sqrt{243,750}

   = 493.71044 ≈ 494

b) Annual holding cost = 4\times(\frac{Q}{2})

                                      = 4\times(\frac{494}{2})

                                      = 4 × 247

                                      = 988

c) Annual ordering cost = O\times(\frac{D}{Q} )

                                       = 25\times(\frac{19,500}{494} )

                                       = 25 × 39.47

                                       = 986.75

AOQ = 494

Annual holding cost = 988

Annual ordering cost = 986.75

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3 years ago
Pleas help ill appreciate it asap pleas
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Answer:

I think it would be 3y+3y-12 because 6y=3y+3y

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
How do you do this? It's geometry
antiseptic1488 [7]
45.

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