The ratio that is not equivalent is B. 7:15
The reason why it's not equivalent because for the other ratios:
1:5 could be turned into 2:10 by multiplying 1 and 5 by 2.
4:20 could turn into 2:10 by dividing both numbers by 2.
And 8:40 could be divided by 4 to get 2:10.
But you can't do anything to 7:15 to make it 2:10.
Answer:
5
Step-by-step explanation:
1. according to the condition

2. when the both prices are increased the ratio is

3. when the both prices are reduced the ratio is

4. using the equations written in steps 2&3 it is possible to make up the system of the two equations:

where x=160; y=52.
5. ration x:y=5.
Answer:80
Step-by-step explanation:if you multiply a times 20 to get 5, you have to multiply b times 20 to get 80
Answer:
-4.7
Explanation:
-4.7 + -3.4 = -8.1
I’m giving you an Integer Rule Cheat Sheet that I use. Hopefully it can help you with Math problems like this!
Answer:
2.6 and 5.4 are both the same sign, he should add them and then take that negative sign from (-5.4), so the answer would be -8.0.