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sergeinik [125]
3 years ago
6

the minute hand on a grandfather clock is 8 inches long what is the circumference of the circle to the nearest tenth of an inch

traveled by the minute hand in one hour​
Mathematics
2 answers:
babunello [35]3 years ago
6 0

Answer:

50.2 inches

Step-by-step explanation:

circumference =2pir

2(3.14)8

6.28(8)

50.24 inches roused to the tenth place so 20.2

erica [24]3 years ago
4 0

Answer:

50.27 or 16pi

Step-by-step explanation:

C = 2πr = 2·π·8 ≈ 50.26548 or 16pi

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3 years ago
What is the equivalent fraction for 21/8?
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3 years ago
Find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 4, and zeros 3-i and 4i.
Alisiya [41]

now, this polynomial has roots of 3-i and 4i, namely 3 - i and 0 + 4i.

let's bear in mind that a complex root never comes all by her lonesome, her sibling is always with her, the conjugate, so if 3 - i is there, 3 + i is also coming along, likewise if 0 + 4i is there, her sibling 0 - 4i is also there.

\bf \begin{cases} x=3-i\implies &x-3+i=0\\ x=3+i\implies &x-3-i=0\\ x=4i\implies &x-4i=0\\ x=-4i\implies &x+4i=0 \end{cases}\\\\[-0.35em] ~\dotfill\\\\ (x-3+i)(x-3-i)(x-4i)(x+4i)=\stackrel{y}{0} \\[2em] \underset{\textit{difference of squares}}{[(x-3)+i][(x-3)-i]}\underset{\textit{difference of squares}}{[x-4i][x+4i]}=0

\bf [(x-3)^2-i^2][x^2-(4i)^2]=y\implies [(x-3)^2-(-1)][x^2-(4^2i^2)]=0 \\[2em] [(x-3)^2-(-1)][x^2-(16(-1))]=0\implies [(x-3)^2+1][x^2+16]=0 \\[2em] [(x^2-6x+9)+1][x^2+16]=y\implies (x^2-6x+10)(x^2+16)=0 \\\\\\ x^4-6x^3+10x^2+16x^2-96x+160=0 \\\\\\ x^4-6x^3+26x^2-96x+160=0 \\\\\\ \stackrel{\textit{multiplying both sides by 4}}{4(x^4-6x^3+26x^2-96x+160)=4(0)} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill 4x^4-24x^3+104x^2-384x+640=y~\hfill

3 0
3 years ago
I NEED THIS ANSWER ASAP(1000-???)=487​
lakkis [162]

Answer:

The answer is 513

Step-by-step explanation:

To get this answer you can subtract 487 from 1000 and then put the answer in the missing place!

-Hope this helps-

Bai~

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