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VMariaS [17]
3 years ago
9

If it is January then there are 31 days this month write the inverse of the conditional statement

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
6 0
January has 31 days so that mean january is friends with christmas.
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o-na [289]

Answer:

\large\boxed{x=4\pm2\sqrt6}

Step-by-step explanation:

x^2-6x+12=2x+20\qquad\text{subtract}\ 2x\ \text{and}\ 12\ \text{from both sides}\\\\x^2-8x=8\\\\x^2-2(x)(4)=8\qquad\text{add}\ 4^2=16\ \text{to both sides}\\\\x^2-2(x)(4)+4^2=8+4^2\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(x-4)^2=24\iff x-4=\pm\sqrt{24}\\\\x-4=\pm\sqrt{4\cdot6}\\\\x-4=\pm\sqrt4\cdot\sqrt6\\\\x-4=\pm2\sqrt6\qquad\text{add 4 to both sides}\\\\x=4\pm2\sqrt6

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2 years ago
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vladimir1956 [14]

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3 years ago
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Effectus [21]

Answer:

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Step-by-step explanation:

The easiest place to start for this is to calculate how much it costs per minute of call time. To do this, if we know that it costs 52.5 cents to call for 3.5 minutes, we can divide those two numbers to get how much it costs per minute.

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Because we can't have 99/100 cents, rounding up to 80 is important to get a proper answer.

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2 years ago
My number has 2 hundreds. the tens digit is 9 more than the ones digit. what is my number
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I hope this helps!
6 0
3 years ago
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