Answer:
9r
Step-by-step explanation:
4r+9r-11r+7r
Combine like terms
13r -11r+7r
2r+7r
9r
Answer:
-19
Step-by-step explanation:
|19|=19
-1 * 19=-19
Answer:
Yes, the ratios do form a proportion.
Answer:
1.133 is about 1, 7.684 is about 8, and 4.718 is about 5. Thus, 1 + 8 + 5 = about 14.