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aleksandr82 [10.1K]

3 years ago

12

Please help I’ll give brainliest!!

1 answer:

topjm [15]3 years ago

4 0

Answer:

16000

Step-by-step explanation:

15999 correct to 3 significant figures is 16,000

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10. An arithmetic sequence has this recursive formula. What is the explicit formula?

Mrrafil [7]

Answer:

$a_{n}=45-3n$

Step-by-step explanation:

Method 1:

Arithmetic sequence is in the form

$a_{n} =a_{1} +(n-1)d\\$

d is the common difference, can be found by:

$d=a_{n}-a_{n-1}=-3$

Subtituting the $a_{1}$ and $d$

You get:

$a_{n}=42+(-3)(n-1)=45-3n$

Method 2 (Mathematical induction):

Assume it is in form $a_{n}=45-3n$

Base step: $a_{1} =45-3(1)=42$

Inducive hypophesis: $a_{n}=45-3n$

GIven: $a_{n+1} =a_{n}-3$

$a_{n+1}=45-3n-3=45-3(n+1)$

Proved by mathematical induction

$a_{n}=45-3n$

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Y = x2 - 2x + 1<br> Solve the equation algebraically

Leviafan [203]

Just factor. y = (x-1)(x-1)

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Is 6.34 repeating a rational or irrational number?

Alchen [17]

Step-by-step explanation:

i think that is a irational number

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If f(x)= x2 + 2 and g(x)= 2x-1, find (f ° g)(5).

valentinak56 [21]

I hope this helps you

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4 years ago

A bank exchanges United States currency for British courrency at the rate of 1.60 dollars to the £ .

kompoz [17]

Answer:

Remember that £ has a greater value compared to $ and vice versa.

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4 years ago