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Fofino [41]
3 years ago
11

I am stuck with this question can anyone help please 2(3x-5)+3(2x+3)

Mathematics
1 answer:
Licemer1 [7]3 years ago
7 0

Answer:

-1

Step-by-step explanation:

here is the answer

mark me the brainliest

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The cost of downloading a book from a certain website is $5.99. The cost of downloading a video is $7.99. Tatum's mom downloads
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The Answer Is 57.92 But the easiest way to do it is Rounding it
4 0
3 years ago
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When the sum of \, 528 \, and three times a positive number is subtracted from the square of the number, the result is \, 120. F
aleksandr82 [10.1K]

Let x be the unknown number. So, three times that number means 3x, and the square of the number is x^2

We have to sum 528 and three times the number, so we have 528+3x

Then, we have to subtract this number from x^2, so we have

x^2-(3x+528)

The result is 120, so the equation is

x^2 - 3x - 528 = 120 \iff x^2 - 3x - 648 = 0

This is a quadratic equation, i.e. an equation like ax^2+bx+c=0. These equation can be solved - assuming they have a solution - with the following formula

x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

If you plug the values from your equation, you have

x_{1,2} = \dfrac{3\pm\sqrt{9-4\cdot(-648)}}{2} = \dfrac{3\pm\sqrt{9+2592}}{2} = \dfrac{3\pm\sqrt{2601}}{2} = \dfrac{3\pm51}{2}

So, the two solutions would be

x = \dfrac{3+51}{2} = \dfrac{54}{2} = 27

x = \dfrac{3-51}{2} = \dfrac{-48}{2} = -24

But we know that x is positive, so we only accept the solution x = 27

6 0
3 years ago
A certain radioactive isotope has leaked into a small stream. Three hundred days after the​ leak, 3% of the original amount of t
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If the half-life is t, then every t days, the amount of the radioactive isotope will be cut in half.
(1/2)^(number of half-lives) = 3%
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This gives the number of half-lives as 5.06.
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3 years ago
What is the missing reason in step 5?
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Answer:

The Correct Answer On Edgen2020 Is

A) Linear pair postulate.

Good Luck!! :))

7 0
3 years ago
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Help me please:) anyways have a good day
sleet_krkn [62]
The correct answer is option 4! you have a good day as well
6 0
3 years ago
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