4 years ago

A computer's value declines about 7% yearly. Sally bought a computer for $800 in 2005. How much is it

Mathematics

1 answer:

Vadim26 [7]4 years ago

4 0

Answer:

Step-by-step explanation: 0.28

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Solve the system y=x²-2 and x²+y=4.Illustrate graphically.

lawyer [7]

Answer:

Solution: $(-\sqrt{3},1),(\sqrt{3},1)$

Step-by-step explanation:

System of equation:

$y=x^2-2\text{ and }x^2+y=4$

Using substitution method.

$y=x^2-2$ substitute into $x^2+y=4$

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$2x^2=6$ (division property of equality)

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$y=(\sqrt{3})^2-2$

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Now cross check the solution using graph.

Please find attachment for graph.

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3 years ago

The trucking company needs to deliver to deliver 1 2/3 tons of oak logs and one and 1 7/12 tons of maple logs. Which load weighs

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worty [1.4K]

Answer:

P = 15.71 cm

Step-by-step explanation:

Given that,

The diameter of the semicircle, d = 10 cm

Radius, r = 5 cm

The perimeter of the semicircle is given by :

$P=\dfrac{\text{The perimeter of the circle}}{2}\\\\=\dfrac{2\pi r}{2}\\\\=\pi r\\\\=3.142\times 5\\\\=15.71\ cm$

So, the perimeter of the semicircle is 15.71 cm.

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3 years ago