Questions: Unit Exam - Populations r=(CBR+IMA)-(CDR+EM) CBR=1 % IMA=1 % CDR=1 % EM=3 % What is r? -2 % 4 % 6 %

Unit Exam - Populations r=(CBR+IMA)-(CDR+EM) CBR=1 % IMA=1 % CDR=1 % EM=3 % What is r? -2 % 4 % 6 %
Transcript text: Unit Exam - Populations\n\\[\n\\begin{array}{c}\nr=(C B R+I M A)-(C D R+E M) \\\\\nC B R=1 \\% \\quad I M A=1 \\% \\\\\nC D R=1 \\% \\quad E M=3 \\%\n\\end{array}\n\\]\n\nWhat is $r$ ?\n$-2 \\%$\n$4 \\%$\n$6 \\%$
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Solution

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Die Antwort ist die erste: −2%-2 \%.

Erklärung: Die Formel für die Wachstumsrate r r lautet: r=(CBR+IMA)−(CDR+EM) r = (CBR + IMA) - (CDR + EM)

Gegeben sind: CBR=1% CBR = 1\% IMA=1% IMA = 1\% CDR=1% CDR = 1\% EM=3% EM = 3\%

Setzen wir diese Werte in die Formel ein: r=(1%+1%)−(1%+3%) r = (1\% + 1\%) - (1\% + 3\%) r=2%−4% r = 2\% - 4\% r=−2% r = -2\%

Daher ist die richtige Antwort: Die Antwort ist die erste: −2%-2 \%.

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