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VLD [36.1K]
3 years ago
8

Please help with corrections ​

Mathematics
2 answers:
sertanlavr [38]3 years ago
5 0

Answer:

7x12x2=168 I think but how did u do this

olchik [2.2K]3 years ago
3 0

The right answer is 244 cm^2

please see the attached picture for full solution

hope it helps

Good luck on your assignment

Stay safe....

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A waterfall has a height of 900 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet pe
aliya0001 [1]

Answer:

The pebble will hit the ground 8.29 second after it is thrown.

Step-by-step explanation:

Given that,

The height of the pebble after t seconds is given by the equation

h= -16t²+24 t+900.

When the pebble hit the ground, the height of the pebble will be zero.

So putting h=0 in the given equation.

0 = -16t²+24 t+900

⇒-4(4t²-6t-225)=0

⇒4t²-6t-225=0

Applying quadratic formula t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}, here a=4, b= -6 and c= -225.

\therefore t=\frac{-(-6)\pm\sqrt{(-6)^2-4.4.(-225)}}{2.4}

⇒ t = 8.29, -6.79

Since time can not negative.

∴t=8.29 seconds.

The pebble will hit the ground 8.29 second after it is thrown.

7 0
2 years ago
Given functions f and g, find f-g.
Eva8 [605]

Answer:

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Step-by-step explanation:

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Subtract the polynomials:

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Distribute the negative sign:

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Combine like terms:

(3x-8x)+(-8+3)

Add like terms:

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5 0
1 year ago
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