X+y=6 --> Equation 1
x-y=8 --> Equation 2
Equation 1 - Equation 2 =
2y =-2
y = -1
x+y = 6 --> Plug y value into equation
x + (-1) = 6
x-1 = 6
x = 7
y = -1, x = 7
19.2
To find the hypotenuse the equation would be: a^2 + b^2 = c^2.
12 squared is 144 and 15 squared is 225. Add them and you get 369. Then, square root 369 to isolate c. It'd be about 19.2
Answer:
all work is shown and pictured
uno is the answer i believe
In this question , the triangle is equilateral triangle , with radius equals to 8 cm and we have to find the length of apotherm, a .
Using sine ratio rule,

For triangle ODC, opposite is a cm and hypotenuse is of length 8 cm .
So we will get

Multiplying both sides by 8

So the length of the apothem is 4 cm .