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elizaa94
15.11.2019 •
Mathematics
The endpoints of a line segment are at the coordinates (3, -4, 6) and (5, 7, -2). what is the midpoint of the segment?
a. 7, 18, -10
b. 1.5, -2, 3
c. 1, -15, 14
d. 4, 1.5, 2
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Ответ:
The answer is (D) ⇒ (4 , 1.5 , 2)
Step-by-step explanation:
∵ the mid point = [(x1 + x2)/2 , (y1 + y2)/2 , z1 + z2)/2]
∵ x1 = 3 , x2 = 5
∵ y1 = -4 , y2 = 7
∵ z1 = 6 , z2 = -2
∴ (x1 + x2)/2 = (3 + 5)/2 = 4
∴ (y1 + y2)/2 = (-4 + 7)/2 = 1.5
∴ (z1 + z2)/2 = (6 + -2)/2 = 2
∴ The mid point of the segment is (4 , 1.5 , 2)
Ответ:
66) ten less than a number
Let the number be n
= n - 10
67) the product of x and y
= x × y or xy
68) The algebraic expression for ten less than n
= n - 10
Must click thanks and mark brainliest