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kupik [55]
3 years ago
9

Two students have examined the scatter plot shown and have created a line of best fit for the data. Student A believes that the

line of best fit for the data is y=−2x+24, while Student B believes that the line of best fit for the data is y=1.5x+23. Determine which student created a better line of best fit given the data in the graph. Justify your answer using mathematics.
Mathematics
1 answer:
svlad2 [7]3 years ago
8 0

Answer:

usbksnkwojeybnakusbmsonsnllonsybks maobsji ..isbksobsniysnwk9mnsubsnnkiaba inahjans ishksksubs iga6kakoav oaujskoa oshkaous oao8nahks phnaian. isynkalubs ouanamlsubsla usvkslisns kaibsmsobsusbkiagnsoyns ia7hkw0me7a ushkoia isjhajskybs ihebsjjs7ja iushsjka7hanla

Step-by-step explanation:

somnkeunmaonuhbsib m isbniakks jjshkwhbsj iksne

ajbsubks8 laibsyjs obsujbsk isgis8j s osjins kksuusb kbsuajoao. kwunkaohw iwhjnwkbjsjsjkwjnao oshjsklsuns

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Find area and perimeter of the rectangle or square ​
Radda [10]

Answer:

Area:702

perimeter: 114

Step-by-step explanation:

24x27=648

6x9=54

648+54=702

27+24+18+6+9+30=114

4 0
2 years ago
Thea has a key on her calculator marked $\textcolor{blue}{\bf\circledast}$. If an integer is displayed, pressing the $\textcolor
mel-nik [20]

Answer:

$9$

Step-by-step explanation:

Given: Thea enters a positive integer into her calculator, then squares it, then presses the $\textcolor{blue}{\bf\circledast}$ key, then squares the result, then presses the $\textcolor{blue}{\bf\circledast}$ key again such that the calculator displays final number as $243$.

To find: number that Thea originally entered

Solution:

The final number is $243$.

As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,

the number before $243$ must be $324$.

As previously the number was squared, so the number before $324$ must be $18$.

As previously the $\textcolor{blue}{\bf\circledast}$ key was pressed,

the number before $18$ must be $81$

As previously the number was squared, so the number before $81$ must be $9$.

6 0
3 years ago
Please please please help
tia_tia [17]
It’s false!!! Hope this helped;)
3 0
3 years ago
Read 2 more answers
Solve for the unknown angle
Naya [18.7K]

Answer:

(?)=70

Step-by-step explanation:

8 0
2 years ago
How can i calculate the growth rate of the values below
Grace [21]

Answer:

  12%

Step-by-step explanation:

The equation for the growth is ...

  f(t) = (initial value)×(growth multiplier per period)^(number of periods)

where the growth multiplier is often expressed as a percentage added to 1:

  multiplier = 1+r

  growth rate = r

__

This equation has two unknowns:

  • initial value
  • growth multiplier

In order to find these, you can make use of two of the supplied data points. I like to choose the ones that are farthest apart, as they tend to average out any errors due to rounding.

Clearly, the table tells you the initial value is 210. If you don't believe, you can put the numbers in the equation to see that:

  f(0) = (initial value)×(growth multiplier)^0

  210 = (initial value)×1

  (initial value) = 210

__

Using the last data point, we get ...

  f(7) = 210×(growth multiplier)^7

  464 = 210×(growth multiplier)^7 . . . . . . . . . fill in table value

  2.209524 = (growth multiplier)^7 . . . . . . .  divide by 210

You can solve this a couple of ways. My calculator is able to take the 7th root, so I can use it to find ...

  \sqrt[7]{2.209524}=\text{(growth multiplier)}\\1.119916\approx \text{(growth multiplier)}

Alternatively, you can use the 1/7 power:

  2.209524^(1/7) = (growth multiplier)

Another way to solve this is to use logarithms:

  log(2.209524) = 7×log(growth multiplier) . . . . . take the log

  log(2.209524)/7 = log(growth multiplier) . . . . . divide by 7

  0.04918553 ≈ log(growth multiplier)

  growth multiplier = 10^0.04918553 ≈ 1.11992 . . . . take the antilog

So, our growth multiplier is ...

  1 + r ≈ 1.11992

  r ≈ .11992 ≈ 12.0%

The rate of growth is about 12% in each period.

_____

Collapsing all of that to a single calculation:

  growth rate = (464/210)^(1/(7-0)) -1 ≈ 12.0%

8 0
3 years ago
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