PLEASE! HELP ASAP! Which does not explain the effect of the author's use of dialogue?

Mathematics

1 answer:

Zarrin [17]3 years ago

4 0

Answer:

do you need all work shown for this problem

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The number A of tablet computers sold (in millions) can be modeled by the function A=4.5t2+43.5t+17 , where t represents the num

Rina8888 [55]

The problem indicates that A represents the number of tablet computers sold in millions. So, if 65 million were sold, we must substitute A = 65 to the equation. Then, we find for t.

65 = 4.5t² +43.5t + 17
Solving for t using a calculator,
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Let's take the positive root. So, t=1.
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Step-by-step explanation:

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Which of the following numbers are perfect squares?

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Step-by-step explanation:

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Makovka662 [10]

Answer:

Train A - 50 miles per hour

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Step-by-step explanation:

Let x mph be the speed of the train B, then the speed of the train A is (x+20) mph.

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train A travels 3(x+20) miles
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In total, they covered the distance of 240 miles, so

$3(x+20)+3x=240\ \ \ \text{[Divide by 3]}\\ \\x+20+x=80\\ \\2x=80-20\\ \\2x=60\\ \\x=30\ mph\\ \\x+20=30+20=50\ mph$

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