Find the area of the triangle with the vertices (2,1), (10,-1),
and(-1,8).

The area of triangle is 25 square units.

Step-by-step explanation:

Given information: Vertices of the triangle are (2,1), (10,-1), and (-1,8).

Formula for area of a triangle:

The given vertices are (2,1), (10,-1), and (-1,8).

Using the above formula the area of triangle is

On further simplification we get

Therefore the area of triangle is 25 square units.

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %