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miamassimino
06.10.2019 •
Mathematics
Which number line would not describe a situation where the midpoint between points a and b is 2 1/2?
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Ответ:
Options (A, B):
1. (2, 3)
2. (-4, 9)
3. (-4, 8)
4. (-0.75, 5.75)
Ответ:
Option C
Step-by-step explanation:
We know that in a number line numbers all (rational preferably) would be marked on a line in a chronological order.
Mid point of A and B would be the average value of A and B.
Here given that mid point is 2 1/2
This implies average of A and B is 2 1/2
Or total of A and B should be 5
Out of 4 options let us check which gives total 5.
A) (2,3) .. Total is 5
B) (-4,9)..Total is again 5
C) (-4,8)..Total is not 5 but 4
D) (-0.75, 5,75) .. Total is 5
So out of these 4 options only C would not describe a situation where the midpoint between points A and B is 2 1/2
Ответ:
Find the slope of the original line and use the point-slope formula
y
−
y
1
=
m
(
x
−
x
1
)
to find the line parallel to
x
+
y
=
10
.
Always true
Step-by-step explanation: