Answer:
c
Step-by-step explanation:
Answer:
15. 2
16. 
or 1.6875
17. 
or 0.5666666667
18. 5
19. 
or 4.375
20. 
or 4.4
Step-by-step explanation:
Find common denominators. Multiply then simplify (if possible).
Answer:
6 cups of coffee
4 cups of hot chocolate
Step-by-step explanation:
x=number of cups of coffee
y=number of cups of hot chocolate
1.75x+1y=14.5
x+y=10 y=10-x
substitute for y
1.75x+10-x=14.5
0.75x=4.5
x=6
y=10-6=4
B=10
<span>sides (a,b,c): 7, 10, 9.4873 </span>
<span>angles (A,B,C): 42°, 72.921°, 65.079° is an acute scalene triangle </span>
<span>(x,y) Vertices: A (4.2137,9.0689) , B (7,0) , C (0,0)
</span><span>Second solution: </span>
<span>sides (a,b,c): 7, 10, 5.3756 </span>
<span>angles (A,B,C): 42°, 107.079°, 30.921° is an obtuse scalene triangle </span>
<span>(x,y) Vertices: A (8.5788,5.1386) , B (7,0) , C (0,0)</span>
