Answer:
B. Point B is opposite of Point C
Step-by-step explanation:
Let B (x1, y1) and C (x2, y2) be two points.
if sum of B and C is 0:
([x1 + x2]/2, [y1 +y2]/2 ) = (0, 0)
then
[x1 + x2]/2=0 then x1+x2 = 0 then x1 = -x2
similarly, [y1+y2]/2 = 0 then y1+y2 = 0 then y1=-y2
Therefore,
B= (-x2, -y2) while C = (x2, y2)
Answer:
$2.40 per pound
Step-by-step explanation:
Take the cost and divide by the pounds
$10.20/ 4.25 pounds
$2.40 per pound
Answer:
11. 
12. 
13. 
Step-by-step explanation:
11. 
Using Formula:
12. 
Using Formula:
13. 
Using Formula:
Answer:
Lucy must walk up 80 steps to reach the 6th floor.
Step-by-step explanation:
Since Michael was 1.0 meters tall, and could only reach up to the 1st floor lift button, and from the 1st floor, he had to walk up 100 steps to reach the 6th floor; while Vinh was 1.4 meters tall, and could reach the 5th floor button, and he had to walk up 20 steps to reach the 6th floor; If Lucy was 1.1 meters tall, to determine how many steps did she have to walk up to reach the 6th floor, the following calculation must be performed:
1 = 100
1.4 = 20
1.4 - 1 = 100 - 20
0.4 = 80
0.1 = X
0.1 x 80 / 0.4 = X
20 = X
100 - 20 = 80
Therefore, Lucy must walk up 80 steps to reach the 6th floor.
