4 years ago

What is the quadric regression equation that fits these data

Mathematics

1 answer:

Angelina_Jolie [31]4 years ago

6 0

Where’s the data?................

You might be interested in

Find a4 for the arithmetic series with S4=-36 and a1=9

erastova [34]

ANSWER

The 4th term is -27

EXPLANATION

The sum of the first n-terms of an arithmetic sequence is

$S_n= \frac{n}{2} (2a_1+d(n-1))$

It was given that,

$S_4 = - 36$

$a_1 = 9$

$- 36= \frac{ 4}{2} (2 \times 9+d(4-1))$

$-36=2(18+3d)$

$-18=18+3d$

$-18 - 18 = 3d$

$3d = - 36$

$d = - 12$

The n-term is given by:

$a_n=a_1+ (n-1)d$

We substitute n=4 to get,

$a_4=9+ (4-1) \times -12$

$a_4=9+ 3\times -12$

$a_4=9 - 36$

$a_4= - 27$

5 0

3 years ago

PLEASE HELP ME I AM STUCK

Masja [62]

Answer:

About half of the fish in the pond are trout

Step-by-step explanation:

109 is about half of 215

5 0

3 years ago

How do I show work for this?

romanna [79]

Answer:

you don't because its not relivant

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Last year, Shane grew 2/3 of an inch and his brother grew 1/3 of an inch. How much more did Shane grow than his brother?

Mekhanik [1.2K]

2/3-1/3= 1/3

So Shane grew 1/3 of an inch more hair than his brother.

5 0

3 years ago

Which of the following statements is true about

lions [1.4K]

Answer:

The y-axis stays the same

Step-by-step explanation:

6 0

3 years ago