A community for students.
Here's the question you clicked on:
 0 viewing
LilVeroDez13
 2 years ago
Suppose B is the midpoint of AC. AB = 5x and BC = 3x + 4. Find AB. (Hint: Make a sketch and write an equation to solve.)
LilVeroDez13
 2 years ago
Suppose B is the midpoint of AC. AB = 5x and BC = 3x + 4. Find AB. (Hint: Make a sketch and write an equation to solve.)

This Question is Closed

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1B is the midpoint, so AB and BC are equal pieces that make up AC

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1this means AB = BC 5x = 3x+4

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1So then i would solve for x?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1tell me what you get

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1I get .5.. but i know thats wrong.. so, 5x = 3x + 4.. u combine like terms.. right?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1subtract 3x from both sides

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.15x = 3x + 4 5x3x = 3x + 43x 2x = 4

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1divide 2 do both sides.. x = 2

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1exactly, now use this to find AB

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1Thanks!! :) Can u help me with another question

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1Thanks!! :)) Four points A, B, C, and D are coplanar, but only two at a time are collinear. Suppose a line is drawn through each pair of points. How many lines can you draw?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1Four points A, B, C, and D are coplanar means that all four points lie in the same plane

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1but only two at a time are collinear means that all 4 points do NOT form a straight line also, it means that there are no 3 points that form a straight line

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1so we might have something like this dw:1348964739339:dw

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1Here are two pairs of lines dw:1348964798916:dw

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1oops just meant to say "here are a pair of lines"

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1Here's another pair dw:1348964855161:dw

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1and another pair dw:1348964897439:dw

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1and that's all we can draw because there are no other possible pairs of lines to draw

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1:) So, there are 4 possible ways?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1double that to get 8

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.14 pairs of lines = 8 lines

LilVeroDez13
 2 years ago
Best ResponseYou've already chosen the best response.1Ahh.. i see now. Thanks so much!! ur really smart :) geometry kicks my butt. You make it easy to understand :)

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.1oh wait, i'm counting 3 pairs (not sure where I got 4 pairs) so 3 pairs = 6 lines
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.