A balloon is 15 feet above the ground and rising at a rate of 10 feet per minute. A second balloon is 40 feet above the ground and descending at a rate of –2.5 feet per minute. How long will it take for the balloons to be at the same height?

Both of the ballon will meet at 35 above ground

Step-by-step explanation:

1st ballon:15 add 2 min will give you 35 { 15+10+10 }

2nd ballon: 40 add -2 min will give you 35  { 40+(-2.5)+(-2.5) }

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

do have an equation or graph or

step-by-step explanation: