When the length of sides are given, you can use law of cosine to find the angles
Refer to this website for details
https://www.mathsisfun.com/algebra/trig-cosine-law.html
11^=8^2+5^2-2*8*5cosA
-80cosA=32
cosA=-0.4
A is about 114 degree
use the same method to find out B and C, you will get 42 and 25
9514 1404 393
Answer:
y = 1/4x -3
Step-by-step explanation:
The inverse relation can be found by interchanging y and x, then solving for y.
x = 4y +12
x = 4(y +3) . . . . factor out 4
x/4 = y + 3
x/4 -3 = y
y = (1/4)x -3 . . . . the inverse relation
Answer:
a I think please be right
Answer:
60y+48
Step-by-step explanation:
Multiply both terms inside the parentheses by 12
Answer:
100 answer is correct
Step-by-step explanation:
2×10-3×-12+4×11
20+36+44
100 answer is correct
