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anonymous
 one year ago
A line segment has endpoints A(4, 8) and B(2, 10). The point M is the midpoint of AB. What is an equation of a line perpendicular to AB and passing through M?
anonymous
 one year ago
A line segment has endpoints A(4, 8) and B(2, 10). The point M is the midpoint of AB. What is an equation of a line perpendicular to AB and passing through M?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok you need to find the slope of the line

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0use this formula \[\frac{ y _{2}y _{1} }{ x _{2}x _{1} } = m\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0instead of 4 would it be

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0plug in 1 of the point to the equation like this 8 = 1(4) +c Solve for c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0umm c should be 12 8 = 4 +12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now we find the midpoint of this line with this formula \[(\frac{ x _{1}+x _{2} }{ 2 } , \frac{ y _{1}+y _{2} }{ 2 })\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0your midpoint should be (3,9)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a. y = x + 4 b. y = −x + 4 c. y = −x + 6 d. y = x + 6 this is what I have to chose from

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0gradient of perpendicular line is \[m _{1}m _{1} = 1\] Since m1 is 1, we can assume m2 is 1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so now we have y=x+c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we plug in the points of the midpoint into the equation we get 9 = 3 + c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it should be easy from here

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0umm no...look at it this way...3+ what number gives you 9?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep so there you have it y=x+6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0N is the midpoint of segment MP. O is the midpoint of segment NP. Segment MP with midpoint N and O M is located at (7, 8), and P is located at (14, 3). What are the coordinates of O? Select one: a. (8.75, 4.25) b. (24.50, 0.50) c. (5.25, 1.25) d. (12.25, 0.25)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok looks confusing but this is what they wantdw:1438267893606:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Find the midpoint of MP with the formula i gave you earlier

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I meant to say would it be C

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you want the solution?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OK midpoint of MP is \[(\frac{ 7+14 }{ 2 },\frac{ 8+(3) }{ 2 }) = (10.5, 2.5)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0N = (10.5,2.5), O is the midpoint of NP so \[(\frac{ 10.5+14 }{ 2 }, \frac{ 2.5+(3) }{ 2 }) = (12.25,0.25)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A triangle has vertices at (4, 5), (4, 4), and (4, 3). What is the approximate perimeter of the triangle? Select one: a. 27 b. 29 c. 28 d. 30 I got c for this on I just wanted to make sure if it was right or wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok you need to find distance between the points with this formula \[\sqrt{(x _{2}x _{1})+(y _{2}y _{1})}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so would I input which ever number to find the answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no you need to get 2 points and put it into the formula to get the distance of 1 side of the triangle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would be easier if you label it like A = (4,5) B = (4,4) C =(4,3)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Find the distance of AB and AC and BC then add them up

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ill give you the distance you try and work it out AB = 9 AC = 11.31 BC = 8.06

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i mean use the formula and try to see if you get the same distance

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The volume of a sphere is 63089.813626667 cubic inches. What is the approximate diameter of this sphere? (Volume of a sphere = \frac{4}{3}\pi {r^3}) Select one: a. 5023.1 in b. 203.4 in c. 49.4 in d. 24.7 in I got b for this and I worked it out but I'm still not sure

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[63089.813626667 = \frac{ 4 }{ 3 } \pi r^3\] \[63089.813626667(\frac{ 3 }{ 4 }) = \pi r^3\] \[47317.36022 = \pi r^3\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 47317.36022 }{ \pi } = 15061.58355 = r^3\] \[\sqrt[3]{15061.58355} = 24.69582535 = r\] \[dia. = 2r =24.69582535\times2 =49.39165069\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dayum sneaky teacher putting radius as an option
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