The equation s(t) = –4.9t2 + 39.2t represents an object launched from ground level directly upward at 39.2 m/s. Find the time it takes for the object to reach its maximum height. Show all work and state your answer as a full sentence. Choose the equivalent expression to this one: -3.5x + 0.2 + 0.8x + 3x + 0.4

were is the equation

answer: i guess 5 units?

step-by-step explanation:

.there can be infinite values of m and n that can satisfy the above equation. for each value of m of m or n. there maybe infinite sets of solution for the above

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional