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alexandr1967 [171]
2 years ago
11

813 divided by 4 and find remainder

Mathematics
2 answers:
Artemon [7]2 years ago
8 0
203 r 25 would be the answer
Mumz [18]2 years ago
4 0

Answer:

203.25 (1 = remainder)

Step-by-step explanation:

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Write the equations of the lines below.
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1. y=1x-2

We can't see the rest

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Step-by-step explanation:

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10 less than 5 times a number k
Montano1993 [528]

Answer:5k-10

Step-by-step explanation:

5k-10

3 0
3 years ago
How do I find the 5 roots of 1^(1/5) using De Moivre's Theorem?​
cupoosta [38]

Do you mean the 5th roots of 1? Or the 5th roots of 1^(1/5), i.e. the 5th roots of the 5th roots of 1?

I assume you mean the former. To begin with,

1 = exp(0°<em>i</em> ) = cos(0°) + <em>i</em> sin(0°)

Take the 5th root, i.e. (1/5)th power of both sides, so that by DeMoivre's theorem,

1^(1/5) = [ cos(0°) + <em>i</em> sin(0°) ]^(1/5)

1^(1/5) = cos((0° + 360°<em>n</em>)/5) + <em>i</em> sin((0° + 360°<em>n</em>)/5)

where <em>n</em> = 0, 1, 2, 3, or 4. Then 1^(1/5) has the 5 possible values,

• cos(0°/5) + <em>i</em> sin(0°/5) = 1

• cos(360°/5) + <em>i</em> sin(360°/5) = cos(72°) + <em>i</em> sin(72°)

• cos(720°/5) + <em>i</em> sin(720°/5) = cos(144°) + <em>i</em> sin(144°)

• cos(1080°/5) + <em>i</em> sin(1080°/5) = cos(216°) + <em>i</em> sin(216°)

• cos(1440°/5) + <em>i</em> sin(1440°/5) = cos(288°) + <em>i</em> sin(288°)

If you wish, or are required to, you can go on to write these in terms of radicals by expanding cos(5<em>x</em>) and sin(5<em>x</em>) (where <em>x</em> = 72° so that 5<em>x</em> = 360°). For example,

cos(5<em>x</em>) = cos⁵(<em>x</em>) - 10 cos³(<em>x</em>) sin²(<em>x</em>) + 5 cos(<em>x</em>) sin⁴(<em>x</em>)

cos(5<em>x</em>) = cos⁵(<em>x</em>) - 10 cos³(<em>x</em>) (1 - cos²(<em>x</em>)) + 5 cos(<em>x</em>) (1 - cos²(<em>x</em>))²

cos(5<em>x</em>) = 16 cos⁵(<em>x</em>) - 20 cos³(<em>x</em>) + 5 cos(<em>x</em>)

which follows from the expansion

(cos(<em>x</em>) + <em>i</em> sin(<em>x</em>))⁵ = cos(5<em>x</em>) + <em>i</em> sin(5<em>x</em>)

due to DeMoivre's theorem and equating the real parts. Then cos(5<em>x</em>) = 1, and you can try to solve for cos(<em>x</em>) :

1 = 16 cos⁵(<em>x</em>) - 20 cos³(<em>x</em>) + 5 cos(<em>x</em>)

Actually, it would be easier to find sin(<em>x</em>) first, since sin(5<em>x</em>) = 0. The expansion in terms of sin(<em>x</em>) will look quite similar to the one shown here.

4 0
3 years ago
Dan invests £3400 into his bank account.
ruslelena [56]

Answer:

<h2>$4556</h2>

Step-by-step explanation:

Step one:

given data

Principal =£3400

rate= 5%= 0.05

time = 6years

Step two:

Required

The final amount A

A= P(1+r)^t

A=3400(1+0.05)^6

A=3400(1.05)^6

A=3400*1.341

A=$4556

after 6 years Dan will have $4556

5 0
3 years ago
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