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Fiesta28 [93]
3 years ago
13

Why dosent an elephant smoke

Mathematics
1 answer:
Ivenika [448]3 years ago
8 0
Because he hasn't cigarettes...
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Nico is saving money for his college education. He invests some money at 9% and 800 less than that amount at 6%. The investments
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Answer:

$1800 at 9% and $1000 at 6%

Step-by-step explanation:

Not needed

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An object is launched at 29.4 meters per
Lerok [7]

Answer:

The reasonable domain for the scenario is option 'a';

a) [0, 7]  

Step-by-step explanation:

For the projectile motion of the object, we are given;

The speed at which the object is launched, v = 29.4 meters per second

The height of the platform from which the object is launched, h = 34.3 meter

The equation for the height of the object as a function of time 'x' is given as follows;

f(x) = -4.9·x² + 29.4·x + 34.3

The domain for the scenario, is given by the possible values of 'x' for the function, which is found as follows;

At the height from which the object is launched, x = 0, and f(x) = 34.3

At the ground level to which the object can drop, f(x) = 0

∴ f(x) = -4.9·x² + 29.4·x + 34.3 = 0

-4.9·x² + 29.4·x + 34.3 = 0

By the quadratic formula, we have;

x = (-29.4 ± √(29.4² - 4 × (-4.9) × 34.3))/(2 × (-4.9)

∴ x = -1, or 7

Given that time is a natural number, we have the reasonable domain for the scenario as the start time when the object is launched, t = 0 to the time the object reaches the ground, t = 7

Therefore, the reasonable domain for the scenario is; 0 ≤ x ≤ 7 or [0, 7].

4 0
3 years ago
Decrease 620 by 10%
julia-pushkina [17]

Answer:

 682

Step-by-step explanation:

620, percentage decreased by - 10% (percent) of its value = 682

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Step-by-step explanation:

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