Answer:

Step-by-step explanation:
<u>Step 1: Distribute the plus</u>
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<u>Step 2: Combine like terms</u>
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Answer: 
It takes 4.3 seconds for the rocket to return to earth.
The equation is:

where -9.8m/sec² is the acceleration due to gravity, v₀ is the initial velocity, and h₀ is the initial height. We will go from the assumption that the rocket is launched from the ground, so h₀=0, and we are told that the initial velocity, v₀, is 42. This gives us:

We will use the quadratic formula to solve this. The quadratic formula is:

Plugging in our information we have:

x=0 is when the rocket is launched; x=4.3 is when the rocket lands.
Answer:
<em>A compound proposition that is always false is called a contradiction</em>
Step-by-step explanation:
Answer:
Area of the sector is 97.30 square feet.
Step-by-step explanation:
The area of the sector is given by

Plugging the known values in this formula to find the area of the sector

Use the value of π as 3.14

Simplifying, we get

Rounded to the nearest hundredth, we get

Answer:
10.25 liters
Step-by-step explanation:
the decimal goes between 10 and 25 because you multiply the .5 separately. hope this helped