3 years ago

Find the surface area of this figure. Round to the nearest tenth

Mathematics

1 answer:

kirill115 [55]3 years ago

6 0

The answer would be 363^2 in

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If you had a mass of 50 kg on Earth what is your weight in Newtons

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50 x 9.8 = 490 newtons

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Solve the following system of equations. <br> 2x + y = 3 <br> x = 2y - 1

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A bag contains 4 blue balls, 7 yellow balls and 4 white balls. Event A is defined as drawing a blue ball on the first draw and e

vekshin1

P(B|A) expressed in simplest form is 8/105.

<h3>What is the probability?</h3>

Probability determines the chances that an event would happen. The chance of the event happening lies between 0 and 1.

P(B|A) = (number of blue balls / total number of balls) x (number of white balls / total number of balls - 1 )

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2 years ago

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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3 years ago