3 years ago

What is the distance between points A(7,3) and B(5,-1)

1 answer:

3 0

We need to use distance formula
Distance=√((x2-x1)²+(y2-y1)²)
Distance=√((7-5)²+(3-(-1))²)=√(4+16)=√20=2√5≈4.47

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sleet_krkn [62]

The work done by $\vec F$ is

$\displaystyle\int_C\vec F\cdot\mathrm d\vec r$

where $C$ is the given curve and $\vec r(t)$ is the given parameterization of $C$ . We have

$\mathrm d\vec r=\dfrac{\mathrm d\vec r}{\mathrm dt}\mathrm dt=k(1-2t)\,\vec\imath+\vec\jmath$

Then the work done by $\vec F$ is

$\displaystyle\int_0^1((t-kt(1-t))\,\vec\imath+kt^2(1-t)\,\vec\jmath)\cdot(k(1-2t)\,\vec\imath+\vec\jmath)\,\mathrm dt$

$=\displaystyle\int_0^1((k-k^2)t-(k-3k^2)t^2-(k+2k^2)t^3)\,\mathrm dt=-\frac k{12}$

In order for the work to be 1, we need to have $\boxed{k=-12}$ .

3 0

3 years ago

stepladder [879]

The answer is y = 1/2x + 2

8 0

2 years ago

earnstyle [38]

Answer: Seven ate Nine

Step-by-step explanation:

7 0

3 years ago

dedylja [7]

It would be option 4) 2 because the line is perpendicular hope this helps!!

6 0

2 years ago

Sphinxa [80]

Answer:

none

Step-by-step explanation:

Because X has the same coefficient on both sides but a different value is being added to it, there cannot be an solution.

9x+3=9x+5

-9x -5

-2=0, which doesnt work so theres no solution

8 0

3 years ago