Answer:
C. 
Step-by-step explanation:
To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.
The answer is D because when you put the missing value which is x you replace it to 10 and then you solve it I hope this helps
Answer:
3/2
Step-by-step explanation:
move the 3x to the other side and divide it by 2
Answer:
47,759
Step-by-step explanation:
77+216 x 326 divided by 2