Which two ratios form a proportion?

A. 5/6 and 4/5

B. 6/5 and 4/5

C. 12/15 and 5/4

D. 15/12 and 5/4

D. 15/12 and 5/4

Step-by-step explanation:

15/5=3

12/4=3

D

Step-by-step explanation:

You basically have to divide each of the fractions. And when you do, the answer is D because 15 divided 5 =3 and 12 divided by 4 = 3. Both ratios are a proportion because they are equal.

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3

  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.