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slamgirl [31]
3 years ago
7

For the lines defined by the following equations indicate with a "V" if they are vertical, an "H" if they are horizontal, and an

"S" (for slanted) if they are neither vertical nor horizontal. S 3x+4y+5=0
Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

Answer:

The answer is the function 3x+4y+5=0 is Slanted

Step-by-step explanation:

To be able to to know if this function is horizontal, vertical or slanted we should look at the gradient.

If the gradient is zero, then the line is horizontal.

If the gradient is infinite, then the line is vertical.

if not, then the line is slanted

We can look the gradient by the general form equation of a line:

y = mx + c

where y = dependent variable, x = independent variable, m = gradient, c = intercept.

With our equation, we can change things around to get the general form equation:

3x + 4y + 5 = 0

4y = 3x - 5

y = \frac{3}{4}x - \frac{5}{4}

Where the gradient is 3/4

Therefore, as the gradient is a number other than zero or infinite, we know that this function is slanted.

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It’s 11.25

Step-by-step explanation:

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Newton’s law of cooling states that dx/dt= −k(x − A) where x is the temperature, t is time, A is the ambient temperature, and k
Vadim26 [7]

Answer:

(a) The solution to the differential equation is x = A_0Coswt + Ce^(-kx)

(b) The initial condition t > 0 will not make much of a difference.

Step-by-step explanation:

Given the differential equation

dx/dt= −k(x − A); t > 0, A = A_0Coswt

(a) To solve the differential equation, first separate the variables.

dx/(x - A) = -kdt

Integrating both sides, we have

ln(x - A) = -kt + c

x - A = Ce^(-kt) (Where C = ce^(-kt))

x = A + Ce^(-kx)

Now, we put A = A_0Coswt

x = A_0Coswt + Ce^(-kx) (Where C is constant.)

And we have the solution.

(b) Since temperature t ≠ 0, the initial condition t > 0 will not make much of a difference because, Cos(wt) = Cos(-wt).

It is not any different from when t < 0.

7 0
2 years ago
What is the average size of a toothpick
Tanzania [10]
About less than 3 inches :)
4 0
3 years ago
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What is the answer to this math problem
Vilka [71]

Answer:

V = 288 m^3

Step-by-step explanation:

The formula for volume of a rectangular prism is

V= l*w*h

V = 4*8*9

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5 0
3 years ago
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Solve this equation using all three methods 4x^ = 9
Bumek [7]

Answer:

x=-\frac{3}{2}, x=\frac{3}{2}

Step-by-step explanation:

(1)       To solve by factoring,

Given equation: 4 x^{2}=9

Subtract 9 from both sides of the equation.

\begin{aligned}&4 x^{2}-9=9-9\\&4 x^{2}-9=0\\&(2 x)^{2}-3^{2}=0\\&(2 x-3)(2 x+3)=0\end{aligned}

Using zero factor principle, 2 x-3=0,2 x+3=0

The solutions are x=-\frac{3}{2}, x=\frac{3}{2}.

(2) To solve by complete the square ,

Given 4 x^{2}=9

Divide both sides of the equation by 4.  

\frac{4 x^{2}}{4}=\frac{9}{4}  

\Rightarrow x^{2}=\frac{9}{4}  

Square root on both sides.

$\Rightarrow x=\pm \frac{3}{2}$

x=-\frac{3}{2}, x=\frac{3}{2}

(3) To solve by quadratic formula,  

$4 x^{2}-9=0$

Here, a = 4, b = 0, c = –9

Quadratic formula, $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

x=\frac{-0 \pm \sqrt{0^{2}-4 \times 4 \times(-9)}}{2 \times 4}

\begin{aligned}&\Rightarrow x=\frac{\pm \sqrt{144}}{8}\\&\Rightarrow x=\pm \frac{3}{2}\\&\Rightarrow x=\frac{3}{2}, x=-\frac{3}{2}\end{aligned}

3 0
3 years ago
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