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posledela
2 years ago
9

Tiara earned 12 dollars on her

Mathematics
1 answer:
Fantom [35]2 years ago
7 0

Answer:

C

Step-by-step explanation:

12 + 3x

12 + 3(20)

12 + 60

72

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A box in the shape of a rectangular prism has a width that is 5 inches greater than the height and a length that is 2 inches gre
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The volume of the rectangular prism can be express in standard polynomial as follows:

x³ + 12x² + 35x

<h3>How to find the volume of a rectangular prism?</h3>

volume of a rectangular prism = lwh

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The height of an object tossed upward with an initial velocity of 120 feet per second is given by the formula h = −16t2 + 120t,
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Answer:

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h =  - 16 {t}^{2}  + 120t \\  \because \:  we \: have \: to \: find \:  the  \:  time  \: required  \:  \\ for \:  the \:  object \:  to \:  return to \:  its  \:  \\ point \:  of  departure. \\  \therefore \: plug \: h = 0 \: in \: the \: given \: euation. \\  \therefore \: 0 =   - 16 {t}^{2}  + 120t \\ \therefore \:16 {t}^{2}  - 120t = 0 \\ \therefore \:8t(2t - 15) = 0 \\ \therefore \:8t = 0 \:  \: or \:  \: (2t - 15) = 0 \\ \therefore \:t =  \frac{0}{8}  \: or \: t =  \frac{15}{2}  \\ \therefore \:t = 0 \: or \: t = 7.5 \\  \because \: t = 0 \: is \: not \: possible \\ \huge \purple{ \boxed{  \therefore \: t = 7.5 \: seconds}}

Thus, the time required for the object to return to its point of departure is 7.5 seconds.

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2 years ago
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