Answer:
Why
Step-by-step explanation:
How do I follow I'm new to dis
Let R and B be the number of red and blue marbles respectively.
Then,
R+B = 36
R:B = 5:4
Therefore,
Ratio of red marbles = 5/9
Ratio of blue marbles = 4/9
This means,
R = 5/9*36 = 20 marbles
B = 4/9*36 = 16 marbles
If one blue marble is removed from the bag, the new B= 16-1 = 15 blue marbles and the new total of marbles in the bag = 36-1 = 35 marbles.
The new ratios are
R = 20/35 =4/7
B = 15/35 = 3/7
That is, R:B = 4:3
The reasoning of the student is wrong. When a marble is removed, both the number of blue marbles changes as well as the total of the marbles in the bag. In other words, both the values in the ratio reduce by 1.
Direct variation/proportional means that one variable is always a multiple of the other variable.
It looks something like
, where n is any number.
Neither. This is because 4 does not go into 9 nor the factors so it won’t work it was tricky so be careful you might think this is perpendicular.
86.6 would be the correct answer to your question 780/9=86.6....
