SOLUTION: I have done understand exponents could you. 1.A launched rocket has an altitude, in meters, given by the polynomial h = vt -4.9t 2nd power, where h is the height, in meters, from
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Question 188986: I have done understand exponents could you. 1.A launched rocket has an altitude, in meters, given by the polynomial h = vt -4.9t 2nd power, where h is the height, in meters, from which the launch occurs, at velocity v in meters per second, and t is the number of seconds for which the rocket is airborne. If a rocket is launched from the top of the tower 60 meters high with an initial upward speed of 30 meters per second, what its height be after 2 seconds?
Its height will be__ meters
(Round to the nearest tenth)
2. Add
(r-5s=2)+ (3r=4s) +(s=4)
3. Multipy
(3z-u)(7z + 5u)
4. Express using a positive exponent
1/ c-s
5. Convert to scientific notation
0.0000335
6. Convert to decimal notation
5.761 x 10 minus 8th power
7. The mass of Pluto is about 1.31 x 10 19th powers metric. The mass of the sun is about 1.988 x 10 27th power metric tons. About how many times the mass of Pluto is the mass of the sun? give your answer in scientific notation.
The mass of the sun is about ___times the mass of Pluto.
(Round to the nearest thousandth as needed. Use scientific notation. Use the multiplication system in the math palette as needed.)
8. Total revenue is the total amount of money taken in by business. An appliance firm determines that when it sells x washing machines, the total revenue, R, in dollars, is given by the polynomial R= 159.5x – 0.1x 2nd power. What is the total revenue from the sales of 112 washing machines?
The total revenue is $___
(Simplify your answer. Type an integer or a decimal.)
9. (3x +2)(3x +2)=
10. (-2x +3) (x +7)
help, been working on this all day.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
I'm not doing your entire homework assignment for you.
1. You have the wrong polynomial function to describe the situation.
 = v_0t - 4.9t^2)
does a fine job of giving you height in meters for time, t, in seconds and initial velocity, 
in meters/sec, but only if the height starts at zero. In this case you have the projectile launched from an initial height of 60 meters, so you need:
 = h_0 + v_0t - 4.9t^2)
where 
is the initial height.
What you are looking for is )
, so just substitute 60 for , 30 for , and 2 for t:
 = 60 + 30(2) - 4.9(2)^2)
Now all that you have to do is the arithmetic.
John
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