Well first you have to add common like terms in this case 2r and -6r to get -4r now your equation is -4r+8=40, now subtract 8 from both sides to leave r by itself and get -4r=32, now divide both sides by -4 to get r=-8
Hope this helps
Answer:
B. They will all be similar
Step-by-step explanation:
You can make as many different size triangles as you like. The angles alone do not constrain the size, only the shape. The triangles you make will all be similar.
Answer:
-1
Step-by-step explanation:
The required relation is ...
7n = n^2 -8
0 = n^2 -7n -8 . . . . put in standard form
0 = (n -8)(n +1) . . . . factor
Solutions are n=8 and n=-1.
The negative solution is -1.
Answer:
20
Step-by-step explanation:
Answer:
5/5 is a whole also equal to 1
Step-by-step explanation:
