3 years ago

HEWPPPP MEEE PLEZZZ....WILLGIVE BRAINLIEST FOR BEST ANSWER! :) 20 PIONTS!!!! NO TROLLING PLEASE

Mathematics

1 answer:

Crank3 years ago

5 0

Answer:

57$

Step-by-step explanation:

450 + 500 = 950 and 6% of 950 is 57

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Find the ordered pair that is a member of both -2x + 6y = 34 and

aksik [14]

Answer:

(1, 6) is the solution

Step-by-step explanation:

-2x + 6y = 34

2x + 2y = 14; divide by 2

x + y = 7; subtract x

y = 7 - x

let's substitute y with 7 - x in first equation

-2x + 6*(7 - x) = 34; expand multiplication

-2x + 6*7 - 6*x = 34; group

-8x + 42 = 34; subtract 42

-8x = 34 - 42 = -8; divide by -8

x = 1

y = 7 - 1 = 6

It is the only solution, as we've arrived at exact numbers.

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A constant force F=6i+8j?6k moves an object along a straight line from point (6, 0, -10) to point (-6, 7, 2).

Arisa [49]

Answer:

The work done is 56 joules.

Step-by-step explanation:

The work done by a force is defined to be the product of the component of the force along $\vec{D}$ and the distance moved:

$W=\vec{F}\cdot \vec{D}$

For our case the displacement vector is

$\vec{D}=\langle -6,7,2\rangle- \langle 6,0,-10\rangle\\\vec{D}=\langle -12,7,12\rangle$

And the work done is

$W=\langle 6,8,6\rangle \cdot\langle -12,7,12\rangle\\W=6\left(-12\right)+8\cdot \:7+6\cdot \:12\\W=56$

If the unit of length is meters and the magnitude of the force is measured in newtons,then the work done is 56 joules.

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Step-by-step explanation:

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