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katen-ka-za [31]

2 years ago

6

A metal washer 1-inch in diameter is pierced by a 1/2 - inch hole. What is the volume of the washer if it is 1/8 - inch thick?

1 answer:

lesya692 [45]2 years ago

5 0

If you are saying the washer is 1/8" thick, then its volume is (1/8)(π/4 - π/16) = 3π/128 in^3

<span>Numerically, the volume is 0.07363 cubic inches

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>

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What is the length of a diagonal cube with a side length of 10cm?

Blizzard [7]

Answer:

Step-by-step explanation:

diagonal= $\sqrt{10^2+10^2}$

diagonal= $\sqrt{200}$

diagonal=14.1421356

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If f(x) = 2(3x) + 1, what is the value of f(2)?

Over [174]

F(2)=2(3*2)+1
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4 0

2 years ago

Please help!! thank you.

Zina [86]

(A) Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ is:

$(-2x^{3}+x-5)(x^{3}-3x-4)$

$=-2x^{3}(x^{3}-3x-4)+x(x^{3}-3x-4)-5(x^{3}-3x-4)$

$=(-2x^{3})(x^{3})+(-2x^{3})(-3x)+(-2x^{3})(-4)+x(x^{3})+(x)(-3x)+(x)(-4)+(-5)(x^{3})+(-5)(-3x)+(-5)(-4)$

$=-2x^{6}+6x^{4}+8x^{3}+x^{4}-3x^{2}-4x-5x^{3}+15x+20$

$=-2x^{6}+6x^{4}+x^{4}+ 8x^{3}-5x^{3}-3x^{2}-4x+15x+20$

$=-2x^{6}+7x^{4}+3x^{3}-3x^{2}+11x+20$

(B) Yes.

Product of $-2x^{3}+x-5$ and $x^{3}-3x-4$ = Product of $x^{3}-3x-4$ and $-2x^{3}+x-5$ because multiplication is commutative.

Commutative Property of multiplication says that a.b = b.a.

Thus, multiplication is same irrespective of the order of two numbers.

5 0

2 years ago