Answer:
14
Step-by-step explanation:
4+3=7
4/2=2
7•2=14
In order to check if the lines are perpendicular, we need to check if their slopes have the following relation (to find the slope we can use the slope-intercept form y = mx + b):
A.
In this option, y = -5 is an horizontal line and x = 2 is a vertical line, therefore they are perpendicular.
B.
First let's find the slope of each line:
These slopes obey the relation stated above, so the lines are perpendicular.
C.
These slopes obey the relation stated above, so the lines are perpendicular.
D.
These slopes obey the relation stated above, so the lines are perpendicular.
E.
These slopes don't obey the relation stated above, so the lines aren't perpendicular.
The correct options are A, B, C and D.
ANSWER:
We know that,
Speed = Distance/Time
So, Time taken = 20kmh-¹/160km
The interquartile range is 10.
Explanation:
-Find the median, (which is 43).
-Then find the first and third quartiles (40 and 50).
-Subtract 50 - 40
- And the answer is 10