3. compare the words accurate and precise. which do you think is more important?

Accuracy is when the observations are closest to the actual value, while precise isn't necessarily close to the actual value, but different observations are close to each other.

E.G

Accuracy: Getting the bullseye each time.

Precise: Darts landing on the same part of the board everytime.

Accuracy is the most important though, since the actual value is more valuable than values that just so happen to be close together.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

you gotta add the following molecules so we can give u an answer

explanation: