In order to find out how long it takes for the rocket to hit the ground, we only need set that position equation equal to 0 (that's how high something is off the ground when it is sitting ON the ground) and factor to solve for t:

$0=-4.9t^2+112t+395$

Factor that however you are factoring in class to get

t = -3.1 seconds and t = 25.9 seconds.

Since time can NEVER be negative, it takes the rocket approximately 26 seconds to hit the ground.

8 0

3 years ago

This is a building on the grounds of the us Air Force academy in Colorado featuring a glass skylight resembling the tail of a je

vovangra [49]

Answer:

Pyramid

Step-by-step explanation:

3 0

4 years ago

13. Reasoning In 2016, the world's oldest

defon

Answer:

five thousand, one hundred and sixty six years old.

Step-by-step explanation:

4 0

3 years ago

A carton of milk contains 2.5L. If Zoe drinks 250ml twice a day, for how many days will the bottle last? The answer is 5 days bu

frez [133]

The main thing you need to know for this question is this conversion:

1 L = 1000 mL , or 1 liter is equal to 1000 milliliters.

So, let's make the entire problem into milliliters:
The carton of milk has 2,500 mL, and Zoe drinks 500 mL a day (250 twice a day).

To find the number of days the bottle will last, you divide the total amount of milk by the amount she drinks per day:

2,500 / 500 = 5 days

3 0

4 years ago