I see 2/3 and 1/2 being multiplied
Y=2
EXPLANATION:
2(-10)-9y=-38
-20-9y=-38
-9y=-18
y=2
Heron's formula is named after Hero of Alexendria, a Greek Engineer and Mathematician in 10 - 70 AD. You can use this formula to find the area of a triangle using the 3 side lengths.
Therefore, you do not have to rely on the formula for area that uses base and height. The picture below illustrates the general fro mu la where S represents the semi-perimeter of the triangle ,
Answer:
c
Step-by-step explanation:
10+12=22
=22^2
=484
