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3 years ago

A system of linear equations contains two equations with the same slope

Mathematics

2 answers:

Rus_ich [418]3 years ago

4 0

A is the correct statement for this question

aleksandrvk [35]3 years ago

3 0

Answer: A
Explanation: because they both have the same slope they share the same graph. Whatever works for one works for the other so there can be many different (infinite) solutions

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Three forces act on a hook. Determine the magnitude of the resultant of the force.

Novay_Z [31]

Use Hooke's law... (just kidding)

Break down each force vector into horizontal and vertical components.

$\vec F_1=(1000\,\mathrm N)(\cos30^\circ\,\vec x+\sin30^\circ\,\vec y)\approx(866.025\,\mathrm N)\,\vec x+(500\,\mathrm N)\,\vec y$

$\vec F_2=(1500\,\mathrm N)(\cos160^\circ\,\vec x+\sin160^\circ\,\vec y)\approx(-1409.54\,\mathrm N)\,\vec x+(513.03\,\mathrm N)\,\vec y$

$\vec F_3=(750\,\mathrm N)(\cos195^\circ\,\vec x+\sin195^\circ\,\vec y)\approx(-724.444\,\mathrm N)\,\vec x+(-194.114\,\mathrm N)\,\vec y$

The resultant force is the sum of these vectors,

$\vec F=\displaystyle\sum_{i=1}^3\vec F_i\approx(-1267.96\,\mathrm N)\,\vec x+(818.916\,\mathrm N)\,\vec y$

and has magnitude

$|\vec F|\approx\sqrt{(-1267.96\,\mathrm N)^2+(818.916\,\mathrm N)^2}\approx1509.42\,\mathrm N$

The closest answer is D.

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3 years ago

6b.) Graph the given points C(-3, 2) and D(6, 2) and find the slope.<br> What is the slope?

White raven [17]

I think y=2 there both on the 2 y intercept straight from each Other

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1) They were multiplied by one power of ten because 2.5x 1^10 is 25, and so that it is easier to divide.

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