2 years ago

Please tell me the final answer and how you got it.

Mathematics

1 answer:

dem82 [27]2 years ago

5 0

It is 484 m^2 ,to my understanding!

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Solve for x.<br> 2x² +21x-61 = (x+7)²<br><br> Please

Ymorist [56]

Answer:

$x = \frac{-7 +\sqrt{489} }{2}$

$x = \frac{-7 - \sqrt{489} }{2}$

Step-by-step explanation:

2x² +21x-61 = (x+7)²

expand

2x² + 21x - 61 = x² + 14x +49

move everything to one side

x² + 7x - 12 = 0

use quadratic formula

$x = \frac{-b +- \sqrt{b^{2}-4ac } }{2a}$

plug in the values

$x = \frac{-7 +- \sqrt{7^{2}-4(1)(-110) } }{2(1)}$

solve

$x = \frac{-7 +- \sqrt{49-4(1)(-110) } }{2}$

$x = \frac{-7 +- \sqrt{49 + 440 } }{2}$

$x = \frac{-7 +- \sqrt{489} }{2}$

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2 years ago

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adell [148]

I am sure it is (1,4) hope this helps

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3 years ago

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According to government data, the probability that a woman between the ages of 25 and 29 was never married is 40%. in a random s

ddd [48]

The probability of finding 2 never married
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the answer is all the above answers added together.
think you can do the rest of the calculation by yourself. :)

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3 years ago

If f(x) = -2x^2 + 3 then f(-5) = ??

Sladkaya [172]

F(-5)= -2x^2+3

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3 years ago

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