The distance between the points is 
Step-by-step explanation:
The formula of the distance between two points
and
is 
To find the distance between two point:
- Put one of the two point as
- Put the other point as
- Substitute then in the rule of the distance and calculate the distance
∵ The two points are (18 , -2) and (6 , -10)
- Put (18 , -2) as
and (6 , -10) as
∴
= 18 and
= 6
∴
= -2 and
= -10
- Substitute them in the rule below
∵ 
∴ 
∴ 
∴ 
∵ (-12)² = 144 and (-8)² = 64
∴ 
∴ 
∵ 
∴ 
The distance between the points is 
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Answer:
n=15
Step-by-step explanation:
subtract 8 from both sides to get 3n=45
divide both sides by 3 to solve for n to get n=15
Answer:
80%
Step-by-step explanation:
48/60 x 100
= 240/3
= 80%
Answer:
6 year's old
Step-by-step explanation:
Grandma is G and Robin is R
G=7R
G+12=3(R+12)
G+12=3R+36
7R+12=3R+36
7R-3R=36-12
4R=24
R=6
Robin is 6 years old
Answer:
The answer is

Step-by-step explanation:

In comparison
Then
