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2 years ago

6

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!! 45 POINTS!!!!!!!!!!!!!!!!!!!!!

2 answers:

Olin [163]2 years ago

7 0

Answer:

OKAY

Step-by-step explanation:For an example the answer is 23

Alekssandra [29.7K]2 years ago

7 0

Answer 23 hope this has helped

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If f(x) = 2x - 1 and g(x)=x²-3x-2, find (f+ g)(x).

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2 years ago

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3 years ago

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60 centimeters + 4 meters<br> What is the answer in centimeters

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Once Isabel rented the warehouse space, she decided to post ads on several social media sites to advertise her online bookstore.

Reika [66]

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3 years ago

Plz do both of them for me and even show the work plzzzzzz

Vinvika [58]

Answer:

(a)= option 3

(b)= option 3

Step-by-step explanation:

(A) It is given that a sequence is defined by the recursive function $a_{1}=1$ and $a_{n}=a_{n-1}+n$

Now, substituting the value of n=2 in above equation,

$a_{2}=a_{1}+2$

$a_{2}=1+2$

$a_{2}=3$

Again putting n=3,

$a_{3}=a_{2}+3$

$a_{3}=3+3$

$a_{2}=6$

Putting n=4,

$a_{4}=a_{3}+4$

$a_{4}=6+4$

$a_{4}=10$

Putting n=5,

$a_{5}=a_{4}+5$

$a_{5}=10+5$

$a_{5}=15$

Putting n=6,

$a_{6}=a_{5}+6$

$a_{6}=15+6$

$a_{6}=21$

Putting n=7,

$a_{7}=a_{6}+7$

$a_{7}=21+7$

$a_{7}=28$

Hence, option 3 is correct.

(B) The given sequence is :

5, -10, 20, -40, 80.....

Since, the given sequence is GP, therefore

$a_{1}=5$ and r=-2

The nth term is given by:

$a_{n}=a_{1}r^{n-1}$

For fifteenth term, put n=15 in above equation, we get

$a_{15}=5(-2)^{14}$

= $5{\times}16384$

= $81920$

Hence, the fifteenth term is 81920.

Option 3 is correct.

5 0

3 years ago