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gayaneshka [121]

2 years ago

14

What is y=21 times 8×34

1 answer:

Aleksandr-060686 [28]2 years ago

3 0

I believe the answer is y=<span>5712</span>

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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

Yo, i need some help :/

Marianna [84]

Answer:

um is there supposed to be a pic

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Is this answer right

ehidna [41]

Answer: No the real answer is 35.10585

Step-by-step explanation:

3 0

2 years ago

Pls help mark u brainlist

Molodets [167]

Do what that person with the long explanation says it’s most likely right!!

8 0

2 years ago

1. The height in feet of a thrown football is modeled by the function h(t) = -16t2 + 60t +6, where t is time

Triss [41]

Answer:

C) football's height after 3 seconds

Step-by-step explanation:

8 0

3 years ago