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RSB [31]
3 years ago
13

What is the solution for this system of linear equations? {23x+4=y 4−2x=y

Mathematics
1 answer:
liubo4ka [24]3 years ago
3 0
We can subsitute since
23x+4=y and
4-2x=y
therefor
23x+4=y=4-2x
so
23x+4=4-2x
minus 4 on both sides
23x=-2x
add 2x to both sides
25x=0
divide both sides by... uh oh
I guess x=0

sub
4-2(0)=y
4-0=y
4=y

the solution is (0,4)
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Less dollar per ounce means you are saving money. Therefore, the 16 ounce bag is the better deal.

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Answer:

\bigg(\frac{2}{3}  {y} \bigg)^{2}

STEP BY STEP EXPLANATION

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To make \red{\bold{\frac{1}{4}  {x}^{2}  -  \bigg( \frac{2}{3}  \bigg)xy}} a perfect square we should add \purple{\bold{\bigg(\frac{2}{3}  {y} \bigg)^{2}}}

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A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:
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Using derivatives, it is found that:

i) v(t) = 3t^2 - 6t

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iii) a(t) = 6t - 6

iv) 6 m/s².

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<h3>What is the role of derivatives in the relation between acceleration, velocity and position?</h3>
  • The velocity is the derivative of the position.
  • The acceleration is the derivative of the velocity.

In this problem, the position is:

s(t) = t^3 - 3t^2 + 8

item i:

Velocity is the <u>derivative of the position</u>, hence:

v(t) = 3t^2 - 6t

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v(3) = 3(3)^2 - 6(3) = 27 - 18 = 9

The speed is of 9 m/s.

Item iii:

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Item iv:

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The acceleration is of 6 m/s².

Item v:

t for which a(t) = 0, hence:

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You can learn more about derivatives at brainly.com/question/14800626

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