Answer:
B(-2,5)
Step-by-step explanation:
Let B (x,y)
M = ([Xa+Xb]/2 , [Ya+Yb]/2)
(x+4)/2 = 1
x+4 = 2
x = 2-4
x = -2
(y+1)/2 = 3
y + 1 = 6
y = 6-1
y = 5
B (-2,5)
In step 2, you are adding 35.10 and 84.60. You carry the 1 to the 1's place after you add up the tenths and the hundreds place.
The side of the edge of the cube is 9. 9cm
<h3>How to determine the length</h3>
Given that the diagonal of a cube measures the square root of 294cm and the diagonal of a face measures 14cm
To find the edge of the face, we know that the face of the cube is a square
Formula for diagonal of a square = 
Where is the side of the square
We then have,

Make 'a' the subject
a = 
Simplify the surd
a =
× 
a = 
a = 
a = 9. 9cm
Therefore, the side of the edge of the cube is 9. 9cm
Learn more about a cube here:
brainly.com/question/1972490
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The answers are as follows:
1-D
2-B
3-C
4-A