Answer:
Use the distance formula to calculate the length of all three sides, and check whether all sides are congruent.
Step-by-step explanation:
An equilateral triangle would have three sides that are all the same length, out of these options, only using the distance formula to calculate the length of all three sides and checking whether they are all congruent will make sure that the triangle is equilateral instead of just isosceles.
Answer: Nathen is 9 years old and Fred is 36 years old.
Step-by-step explanation:
set Nathen's age = x
set Fred's age = 4x (because he is 4 times as old as Nathen)
4x = x + 27
3x = 27
x = 9 (Nathen's age)
4x = 36 (Fred's age)
Answer:
Number of Fares to airport is 25 and number of fares from airport is 25.
Step-by-step explanation:
Given:
Total Number of fares =50
Let number of fares to airport be x.
Let number of fares from airport be y.
hence the equation can be framed as;

Also Given
Total Money Collected = $375
Cost to airport = $10
Cost from Airport = $5
Total Money Collect is equal to Cost to airport multiplied by number of Fares to airport plus Cost from airport multiplied by number of Fare from airport.

Dividing by 5 on both side we get;

Now Subtracting equation 1 from 2 we get;

Substituting the value of x in equation 1 we get;

Hence Number of Fares to airport is 25 and number of fares from airport is 25.
Answer: 1/4
Step-by-step explanation: 1 out of the 4 members is 8 years old, so 1/4 or 025.