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mxxrrr
06.11.2020 •
Mathematics
HELP THE HOMIE OUT IIGHT:
Although the term "invasive species" is imprecise, non-native plants and animals are a threat to many ecosystems.
Which sentence gives the best support for this claim? (3 points)
Some non-native species, such as rabbits in Australia, were originally introduced with good intentions.
In 1859, Thomas Austin released 24 rabbits into the wild in Australia, saying, "The introduction of a few rabbits could do little harm."
By the 1920s, Australia's rabbit population had grown from 24 to an estimated 10 billion.
Rabbits, which compete with native wildlife and damage vegetation, have had a devastating effect on Australia's environment.
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Ответ:
The last sentence:
Rabbits, which compete with native wildlife and damage vegetation, have had a devastating effect on Australia's environment.
Ответ:
The last sentence:
Rabbits, which compete with native wildlife and damage vegetation, have had a devastating effect on Australia's environment.
Step-by-step explanation:
Ответ:
cos 2x = (√7) / 4
Step-by-step explanation:
sin x - cos x = 1/2
(sin x - cos x)² = (1/2)²
sin²x - 2 sin x cos x + cos² x = 1/4
1 - 2 sinx cosx = 1/4
2 sinx cosx = 3/4
sin 2x = 2 sinx cosx = 3/4
sin² 2x = 9/16
cos² 2x = 1 - sin² 2x = 1 - 9/16 = 7/16
cos 2x = (√7) / 4