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WITCHER [35]
3 years ago
15

Solve 5x^2+8x+3=0 for x

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0

5x^2+8x+3=0

factor

(5x+3) (x+1)=0

using the zero product property

5x+3 =0  x+1 =0

5x=-3   x=-1

x=-3/5   x=-1


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PLSSS RNNN<br> -5 + x = 10<br> x = 5<br> x = 10<br> x = -15<br> x = 15
Tema [17]
X = 15

Add 5 to each side
10 + 5 = 15
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2 years ago
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2 = f/8 Solve the equation.
MaRussiya [10]

Answer:

f = 16

Step-by-step explanation:

Isolate the variable, f. Note the equal sign, what you do to one side, you do to the other. Multiply 8 to both sides of the equations:

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2(8) = (f/8)(8)

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f = 16 is your answer.

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2 years ago
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Can anyone help me about question 2
madreJ [45]

9514 1404 393

Answer:

  3(4/3)^2543

Step-by-step explanation:

Using logarithms base 2, we have ...

  (a_n)^{\log{a_n}}=(a_{n+1})^{\log{a_{n-1}}}\\\\(\log{a_n})(\log{a_n}) = (\log{a_{n-1}})(\log{a_{n+1}}) \\\\ \dfrac{\log{a_{n+1}}}{\log{a_{n}}}=\dfrac{\log{a_n}}{\log{a_{n-1}}}=\dots\dfrac{\log_2{16}}{\log_2{8}}=\dfrac{4}{3}

That is, the ratio of each term to the previous is a constant equal to 4/3. This is the definition of a geometric sequence. This sequence has first term 3 and common ratio 4/3, so the general term is ...

  \log_2 a_n=3\left(\dfrac{4}{3}\right)^{n-1}

and the 2544th term is ...

  \boxed{\log_2{a_{2544}}=3\left(\dfrac{4}{3}\right)^{2543}}

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2 years ago
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Alex17521 [72]
First find the length of the side by taking the square root of 112.

There are 4 sides so multiply your answer by 4 to get the perimeter.

The answer is 42.332 which rounds to 42.
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2 years ago
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