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Xelga [282]
3 years ago
11

Andrew bought a computer for $650, a printer for $135.89, and two printer cartridges for

Mathematics
2 answers:
Naddika [18.5K]3 years ago
8 0

Answer:

814.68

Step-by-step explanation:

650+135.89+28.79=814.68

konstantin123 [22]3 years ago
5 0

Answer:

$843.47

Step-by-step explanation:

First off I added 650 to 135.89 to get 785.89. Then I added 57.58 because Andrew bought 2 cartridges. Add 57.58 to 785.89, and you get your answer.  

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Answer:

The position is given by r(t) =  (-2 -t √14, 1 + √3.5, 3 + 3√3.5)

Step-by-step explanation:

The direction is given by the difference between the starting point and the end point, thus it is (-4,0,6)-(-2,-1,3) = (-2,1,3). The norm of this vector is        √( (-2)²+1²+3²) = √14 = 3.7416 secons

Since the speed is 7 cm/sec, we need to multiply this vector by 7/√14 = √3.5 in order to obtain how much does the particle advance each second.

As a consecuence, it advances (-2,1,3) * √3.5 = (- √14, √3.5, 3 √3.5)

And, as a result, the position after t seconds is given by the function

r(t) = (-2,1,3) + t (-√14, √3.5, 3 √3.5) = (-2 -t √14, 1 + √3.5, 3 + 3√3.5)

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5.Solve the system using substitution.
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OK first convert one of the equations into Y=MX+b form

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