Mathematics, 04.07.2019 02:30 Uhmjujiooo4220
Find the points having x-coordinate of 9 whose distance from the point (3,-2) is 10.
Answers: 1
![\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{3}~,~\stackrel{y_1}{-2})\qquad (\stackrel{x_2}{9}~,~\stackrel{y_2}{y})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ \stackrel{d}{10}=\sqrt{[9-3]^2+[y-(-2)^2]}\implies 10=\sqrt{(9-3)^2+(y+2)^2} \\\\\\ 10=\sqrt{6^2+\stackrel{FOIL}{(y^2+4y+4)}}\implies 10^2=36+(y^2+4y+4)](/tpl/images/0048/6165/65447.png)
![\bf 100=y^2+4y+40\implies 0=y^2+4y-60 \\\\\\ 0=(y+10)(y-6)\implies y= \begin{cases} -10\\ 6 \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (9,-10)\qquad (9,6)~\hfill](/tpl/images/0048/6165/7e719.png)
Another question on Mathematics
Mathematics, 20.06.2019 18:04
Medium sodas cost $1.25 and hot dogs cost $2.50. natalie’s group brought in pizzas but is buying the drinks at concession stand. how many medium sodas can natalie’s group buy with $20? make a table to show answer.
Answers: 1
Mathematics, 21.06.2019 17:30
Can any one me with the answers to these questions asap?
Answers: 2
Mathematics, 21.06.2019 17:30
Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.
Answers: 1
You know the right answer?
Find the points having x-coordinate of 9 whose distance from the point (3,-2) is 10....
Questions
Mathematics, 04.09.2020 04:01
Engineering, 04.09.2020 04:01
Mathematics, 04.09.2020 04:01
History, 04.09.2020 04:01
Mathematics, 04.09.2020 04:01
Mathematics, 04.09.2020 04:01
Mathematics, 04.09.2020 04:01
Mathematics, 04.09.2020 04:01
Physics, 04.09.2020 04:01
