Answer:
73.131
Step-by-step explanation:
T=
s(s−a)(s−b)(s−c)
T=
20.9(20.9−15)(20.9−17)(20.9−9.81)
T=
5348.14
=73.13
y will equal negative 1 cause one half over 2 plus y equals negative 1
A has right triangles also known for the 90 degree angle triangle.
In both they both have 90 degree and 4 sides
b has parallelograms and obtuse angles
Square root of 15 is an irrational number.
Answer:
m = -1
Step-by-step explanation:
First write the line in slope intercept form y = mx+b where m is the slope and b is the y intercept
x-y = 6
subtract x from each side
-y = -x+6
Multiply each side by -1
y = x-6
The slope is 1
Perpendicular lines have slopes that multiply to -1
m * 1 = -1
m = -1
The slope of the perpendicular line is -1