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Murrr4er [49]
3 years ago
8

Thea has a key on her calculator marked X. If an integer is displayed, pressing theX key chops off the first digit and moves it

to the end. For example, if $6138$ is on the screen, then pressing the X key changes the display to $1386$. Thea enters a positive integer into her calculator, then squares it, then presses the X key, then squares the result, then presses the key again. After all these steps, the calculator displays $243$. What number did Thea originally enter?
Mathematics
1 answer:
Irina-Kira [14]3 years ago
6 0

Step-by-step explanation:

jjsjdhhdhdhdhhfhdnjjdjdhshdsh

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Which mathematical expression means seven more than the product of three and x
vladimir2022 [97]

Answer:

More than means addition and product means multiplication.  Therefore, seven more than the product of three and x would mean multiplying 3 and x together then adding 7 to that.  Or,  3x + 7.

Step-by-step explanation:


7 0
3 years ago
Why is a regression line referred to as the line of best fit?
aalyn [17]
<h2>Answer with explanation:</h2>

When there is a linear relationship is observed between the variables, we use  linear regression predict the relationship between them.

Also, we predict the values for dependent variable by modelling a linear model that best fits the data by drawing a line Y=a+bX, where X is the explanatory variable and Y is the dependent variable.

In other words: The line of best fit is a line through a scatter plot of data points that best describes the relationship between them.

That's why the  regression line referred to as the line of best fit.

4 0
3 years ago
(-10x-8)-70 (4x-11) + 46 -43(6x6) -54+ (8x5)
STatiana [176]
I feel like you just put random numbers in to waste someone time... but I did the problem any way.

7 0
3 years ago
PLEASE HELP!!! Find the equation , in the standard form of the line passing through the points (3,-4) and (5,1)
ExtremeBDS [4]
\bf \begin{array}{ccccccccc}&#10;&&x_1&&y_1&&x_2&&y_2\\&#10;%  (a,b)&#10;&&(~ 3 &,& -4~) &#10;%  (c,d)&#10;&&(~ 5 &,& 1~)&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope =  m\implies &#10;\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{1-(-4)}{5-3}\implies \cfrac{1+4}{5-3}\implies \cfrac{5}{2}&#10;\\\\\\&#10;% point-slope intercept&#10;\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-(-4)=\cfrac{5}{2}(x-3)\implies y+4=\cfrac{5}{2}x-\cfrac{15}{2}

\bf y=\cfrac{5}{2}x-\cfrac{15}{2}-4\implies y=\cfrac{5}{2}x-\cfrac{23}{2}\impliedby &#10;\begin{array}{llll}&#10;\textit{now let's multiply both}\\&#10;\textit{sides by }\stackrel{LCD}{2}&#10;\end{array}&#10;\\\\\\&#10;2(y)=2\left( \cfrac{5}{2}x-\cfrac{23}{2} \right)\implies 2y=5x-23\implies \stackrel{standard~form}{-5x+2y=-23}&#10;\\\\\\&#10;\textit{and if we multiply both sides by -1}\qquad 5x-2y=23

side note:  multiplying by the LCD of both sides is just to get rid of the denominators
5 0
3 years ago
I really don't get these answers but if you could help me that'll mean a lot thank you for answering my question if you did
mixer [17]
Use KMF (Keep multiply flip) 
keep the first fraction as it is
change sign to multiplication
flip numerator and denominator of last fraction
then finish
6 0
3 years ago
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