3 years ago

Find the missing numbers. what is the rule?

Mathematics

1 answer:

rjkz [21]3 years ago

8 0

Answer:

I think that Rule: xn = n2

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= [2(length)(width)] + [2(width)(height)] + [2(height)(length)]

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= (20 + 10 + 16) units²

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At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 9.8% e

fredd [130]

Answer:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

Step-by-step explanation:

In this problem, the initial area of the forest at time t = 0 is

$A_0 = 1500 km^2$

After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.

So for instance, after 1 year, the area is

$A_1 = A_0 \cdot \frac{90.2}{100}=0.902 A_0$

After 2 years,

$A_2=0.902 A_1 = 0.902(0.902A_0)=(0.902)^2 A_0$

And so on. So, after t years, the area of the forest will be

$A(t)=(0.902)^t A_0$

And by substituting the value of A0, we can find an explicit expression:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

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4 years ago

What is written as a complex number in the form ? A. B. C. D.

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The answer is at least 72 due to weather

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3 years ago

What's the slope of (5,9); (8,0)

motikmotik

here's the solution,

slope of the line

=》

$\frac{y2 - y1}{x2 - x1}$

=》

$\frac{0 - 9}{8 - 5}$

=》

$\frac{ - 9}{3}$

=》

$- 3$

so, slope of the line is, <em><u>-3</u></em>

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3 years ago

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Find the missing numbers. what is the rule? ​

Find the missing numbers. what is the rule?