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3 years ago

Last week at the lake it was 23 °C. Yesterday it was 13 degrees warmer. What was the temperature yesterday?

Mathematics

1 answer:

Arturiano [62]3 years ago

4 0

Answer:

36°C

Step-by-step explanation:

Simple math: 23 + 13 = 36.

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Sail with the equation by completing the square x^2+8x=-3

maxonik [38]

Answer:

The solutions are $x=-4(+/-)\sqrt{13}$

Step-by-step explanation:

we have

$x^{2} +8x=-3$

Complete the square. Remember to balance the equation by adding the same constants to each side

$x^{2} +8x+16=-3+16$

$x^{2} +8x+16=13$

Rewrite as perfect squares

$(x+4)^{2}=13$

square root both sides

$x+4=(+/-)\sqrt{13}$

$x=-4(+/-)\sqrt{13}$

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Klio2033 [76]

Answer:

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Step-by-step explanation:

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