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4 years ago

9. A solid rectangular block of copper 5 cm by 4 cm by 2 cm

Mathematics

1 answer:

Margarita [4]4 years ago

4 0

Answer:

length = 1273.2 cm or 12.73 m

Step-by-step explanation:

Assume no loss.

diameter of wire, d = 2 mm

radius of wire, r = 1 mm = 0.1 cm

Volume of block, V = 5*4*2 = 40 cm^3

cross sectional area of wire, A = pi (r^2) = pi 0.1^2 = 0.01pi cm^2

Length of wire

= V/A

= 40 cm^3 / 0.01pi cm^2

= 4000/pi cm

= 1273.2 cm

= 12.73 m

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andriy [413]

Answer:

Option A. These two lines are perpendicular

Step-by-step explanation:

we know that

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step 1

Convert the given equation A in slope intercept form

$y=mx+b$

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b is the y-intercept

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$y=\frac{2}{3}x+2$

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step 2

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4 years ago

Evaluate the function g(x) = 8x+16 when x=-3,0, and 8

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Answer:

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Step 1. Plugin the given numbers.

g(-3)= 8(-3) + 16

g(0)= 8(0) + 16

g(8)= 8(8) + 16

Step 2. Solve the equations.

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g(-3)= -8 Added -24 and 16

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g(0)= 16 Added 16 and 0.

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g(8)= 80 Added 64 and 16.

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2 years ago