By definition, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers and since dividing a number with a fraction is the same as multiplying that number with the inverse of that fraction we can conclude it is similar.
The reciprocal of a number is the fraction flipped upside down so the reciprocal of -2/5 is -5/2
This is a simple simplification problem (ha!).
14/10 is an improper fraction. Since a fraction can also be a division expression, 14 divided by 10 equals 1 with a remainder of 4.
Since we have the answer, we can now produce a mixed fraction of:
4
1 ---
10
Since 4/10 is equal to 2/5,
4 2
1 --- is equal to 1 ---
10 5
Answer:
The perimeter of triangle ABC is 
Step-by-step explanation:
The perimeter of triangle ABC is equal to

the formula to calculate the distance between two points is equal to
we have

step 1
Find the distance AB

substitute in the formula
step 2
Find the distance BC

substitute in the formula
step 3
Find the distance AC

substitute in the formula
step 4
Find the perimeter

substitute the values

The answer would most defiantly be “21”, choice c “21”
7/10 because when you make the denominators the same (10) you do same thing to the 3 making it a six and 7 is greater then 6