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ludmilkaskok [199]
3 years ago
12

Find the real-number root. Square root -2.56

Mathematics
2 answers:
tatyana61 [14]3 years ago
8 0
The correct answer (NO REAL NUMBER ROOT) 
tia_tia [17]3 years ago
3 0
The answer to your question is "No real number root"
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The perimeter of a pentagon is 48. One side is equal to x, two sides are twice x and two sides are three more than x. What are t
DochEvi [55]

Answer:

  side lengths are 6, 12, 12, 9, 9

Step-by-step explanation:

The perimeter is the sum of the lengths of the sides:

  x + 2x + 2x + (x+3) + (x+3) = 48

  7x +6 = 48 . . . . collect terms

  7x = 42 . . . . . . .subtract 6

  x = 6 . . . . . . . . . divide by 7

Substitute this value into the expressions for the side lengths:

  x = 6

  2x = 12

  x+3 = 9

The side lengths are 6, 12, 12, 9, 9.

4 0
4 years ago
Calculate y as a function of x when dy/dx = 4x3 + 3x2 - 6x + 5
PtichkaEL [24]
Answer:
y = x⁴ + x³ - 3x² + 5x + C

======

Separable differential equations such as these ones can be solved by treating dy/dx as a ratio of differentials. Then move the dx with all the x terms and move the dy with all the y terms. After that, integrate both sides of the equation.

   \begin{aligned}
\dfrac{dy}{dx} &= 4x^3 + 3x^2 - 6x + 5 \\
dy &= (4x^3 + 3x^2 - 6x + 5) dx \\
\int dy &= \int (4x^3 + 3x^2 - 6x + 5) dx 
\end{aligned}

In general (understood that +C portions are still there), 

   \int x^{m} = \dfrac{x^{m+1}}{m+1}

Note that ∫dy = y  since it is ∫1·dy = ∫y⁰ dy = y¹/(0+1) = y
For the right-hand side, we use the sum/difference rule for integrals, which says that

   \int \big[f(x) \pm g(x)\big]\, dx = \int f(x)\,dx \pm \int g(x) \, dx

Applying these concepts:

   \begin{aligned} 
 \int dy &= \int (4x^3 + 3x^2 - 6x + 5) \, dx \\
y &= \int 4x^3\,dx + \int 3x^2 \, dx - \int 6x\, dx + \int 5\, dx \\
&= \frac{4x^4}{4} + \frac{3x^3}{3} - \frac{6x^2}{2} + 5x + C \qquad \text{(only one $C$ is needed)} \\
&= x^4 + x^3 - 3x^2 + 5x + C
\end{aligned}

The answer is y = x⁴ + x³ - 3x² + 5x + C
6 0
3 years ago
Explain the relationship between multiplying and dividing by 10, 100, and 1,000 and moving the decimal point to the right or to
Anna71 [15]
You move to the left since you are multiplying
5 0
3 years ago
Write two decimals that can be rounded to 1.5
evablogger [386]
It can be either 1.4 or 1.3 or your looking to your nearest 5th
5 0
3 years ago
Read 2 more answers
If g=27 and F=54º, find h. Round to the nearest tenth.
antoniya [11.8K]

Answer:

The correct answer is B = 15.9

Step-by-step explanation:

h = 27 cos 54 = 15.9

4 0
3 years ago
Read 2 more answers
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