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3 years ago

13

The vertices of a figure are given. Rotate the figure as described. Find the coordinates of the image. E(−4, 1), F(−3, 3), G(−2,

3), H(−1, 1) 180∘ about the origin

1 answer:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

E'(4, -1), F'(3, -3), G'(2, -3), H'(1, -1)

Step-by-step explanation:

Rotation 180° about the origin negates each coordinate value.

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3 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:

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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,

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

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3 years ago