Answer:
Step-by-step explanation:
1. multiplication property of equality.
2.division property of equality.
<u>Answer:</u>
Two co planar lines that are perpendicular to the same line are always PARALLEL. So option A is correct.
<u>Explanation:</u>
Given:
- They are perpendicular to the same line
To find:
whether they are parallel or not and choose the correct option from the given options.
Solution:
Now, we know that, slopes of perpendicular lines is -1
Then,
similarly
Now, as both lines are perpendicular to same line, then, we have to equate above both of them.
Then, 
1st line slope = 2nd line slope
Here, slopes of two lines are equal.
Hence, Two coplanar lines that are perpendicular to the same line are always parallel. So option A is correct.
Answer:
£600
Step-by-step explanation:
Katie gives 1/3 of the money to her sister.
1/3 of 1200 is 400, because 1200 divided by 3 is 400. So she gives 400 to her sister, which means she has 1200-400= 800 left.
When she gives 1/4 of the remaining to her brother, that means that we need to figure out how much 1/4 of 800 is. 800 divided by 4 is 200. So Katie gives 200 to her brother.
800 that she has remaining minus the 200 she gives to her brother leaves her with 800-200 = 600