I need help with these math problems please?
thanks
1. The intersection of Planeand line, which does not lie on plane, is which of the following?
A) a line
B) a point
C) two points
D) a point or a line
2. If B is between A and C, AB=9 and AC=24, what is the value of BC?
A) 33
B) 16.5
C) 15
D) 7.5
3. If B is between A and C, AB=2x, BC=4x and AC=42, what is the value of x?
A) 7
B) 8
C) 14
D) 42
4. If B is between A and C, AB=3x-1, BC=2x+4 and AC=38, what is the value of BC?
A) 7
B) 18
C) 19
D) 20
Favorite Answer
assume book be the plane and pen be the line
now keep the pen in different directions except not on the book you will get that
2.do you mean A,B,C are in the same line if yes answer is 15
AB+BC=AC if they lie on same line
so remaining length BC is 15 hope this is clear
3.. same as above
AB+BC=AC
6x=42 so x=8
4..calculate x as above you get x=7
so BC=2*7 +4 =18
blaah i tried to do the rest..it’s hard and i’m in 8th grade..but i’m sure i could solve it if i had a lot of time. sorry…i have my own homework. what grade are you in?!
2)c
3)a
4)b
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