2 years ago

Explain how you can solve 8x45 using the distributive property

1 answer:

8 0

when you multiply sum by a number like (7+9)plus 5 it is the same as multiplying each added by that factor (7time5)plus (9time5)

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An object is dropped from a small plane. As the object falls, its distance, d, above the ground after t seconds, is given by the

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The inequality can be used to find the interval of time taken by the object to reach the height greater than 300 feet above the ground is:

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Solution:

The object falls, its distance, d, above the ground after t seconds, is given by the formula:

$d = -16t^2 + 1000$

To find the time interval in which the object is at a height greater than 300 ft

Frame a inequality,

$-16t^2 + 1000 > 300$

Solve the inequality

Subtract 1000 from both sides

$-16t^2 + 1000 - 1000 > 300 - 1000\\\\-16t^2 > -700$

$16t^2 < 700\\\\Divide\ both\ sides\ by\ 16\\\\t^2 < \frac{700}{16}\\\\Take\ square\ root\ on\ both\ sides\\\\t < \sqrt{\frac{700}{16}}\\\\t < \pm 6.61$

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t < 6.61

And the inequality used is: $-16t^2 + 1000>300$

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