Select all of the ratios that are equivalent to 4 to 7.
5/8
12/10
8.14
5 to 10
16/28
9 to 16

Step-by-step explanation:

Question asked:

Select all of the ratios that are equivalent to 4 to 7.

1) 5/8

2) 12/10

3) 8.14

4) 5 to 10

5) 16/28

6) 9 to 16

Solution:

To know the ratios are equivalent to or not, we have to check each by cross multiplication:-

1)

By cross multiplication:

Not equivalent.

2)

By cross multiplication:

Not equivalent.

3) 8.14 =

By cross multiplication:

Not equivalent.

4)

By cross multiplication:

Not equivalent.

5)

By cross multiplication:

Yes, this is equivalent.

6)

By cross multiplication:

Not equivalent.

Thus, only is equivalent.

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

answer: 4/6 =5/7.5

step-by-step explanation: it is based on scale and the scale between the two is 1.25. the answer is correct but i dont know if i explained it right