6 : 10 = 3 : 5
24 : 40 = 3 : 5
36 : 60 = 3 : 5
42 : 70 = 3 : 5
A. 18 : 20 = 9 : 10 (incorrect)
B. 30 : 20 = 3 : 2 (incorrect)
C. 18 : 30 = 3 : 5 (correct)
D. 50 : 30 = 5 : 3 (incorrect)
The answer is C. 18 : 30
Hope this helps. - M
Answer B
Step-by-step explanation:
2x+1+14
Answer:dy/dt(x=3)=54
Step-by-step explanation:
We know that we can write:

and so evaluate it as a product of functions, that is for a given value of x or t, we get that
.
Now we are told that:
whenever it happens, this means the influence of t is hidden, and we only consider the result, that is, how much is x when the derivative has the value of 2, we are not concerned for what value of t it happens, since we get all the necessary information beforehand.
Now we need to calculate
.
Therefore
or
.