Answer:
Okay so 5th power of 2 Plus second power of 2 minus 3rd power of 3
The law of cosines states that, if
is the angle between sides b and c,

So, plugging our values, we have

This is equal to

Answer:23
Step-by-step explanation:
Answer:
x = 7 and y = 17
Step-by-step explanation:
16x + 9x + 5 = 180 cuz they are supplementary
25x = 175
x = 7
We also know that 16x + 4y = 180
so 16(7) + 4y = 180, so 4y = 180 - 112, so 4y = 68. y = 17
hope this makes sense