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irakobra [83]
3 years ago
15

Can you help me please ?

Mathematics
1 answer:
rewona [7]3 years ago
8 0

1.

(Create a table then plot the points)


X | 0 | 1 | 2 | 3 |

-------------------------

Y | -1 | 3 | 7 | 11 |


4 (0) -1 => 0 - 1 = -1

4 (1) -1 => 4 - 1 = 3

4 (2) -1 => 8 - 1 = 7

4 (3) -1 => 12 - 1 = 11


Just apply the table method to the others and you should be fine! :)

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Can you help me find all the seventh roots of unity? what do they look like graphed?
alex41 [277]

Answer:

There are seven seventh roots of unity, e2πki7 , all on the unit circle, r=1 above.

The first one is at θ=2π7=360∘7=5137 ∘ , and there are others at 4π7,6π7,8π7,10π7,12π7 and of course at 0 radians, i.e. unity itself.

How to find?

There are 4 fourth roots of unity and they are 1, i,−1 and−i

Each of the roots of unity can be found by changing the value of k k k in the expression e 2 k π i / n e^{2k\pi i/n} e2kπi/n. By Euler's formula, e 2 π i = cos ⁡ ( 2 π ) + i sin ⁡ ( 2 π ) = 1.

8 0
3 years ago
A y=cos(x+pi/2)<br> B y=cos(x+2pi)<br> C y=cos(x+pi/3)<br> D y=cos(x+pi)
astra-53 [7]

Answer:

D

Step-by-step explanation:

There was actually too much work for this on my paper so I can't really show it, but if you can memorize this parent function I would.

7 0
3 years ago
Read 2 more answers
Five of Teddy’s six cousins can
Sliva [168]

Answer: 0.83

Step-by-step explanation:

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\frac{5}{6} =0.83

7 0
3 years ago
Help pls ill give extra points :))
ahrayia [7]

Answer:

it is 19

Step-by-step explanation:

follow the order of operations

P

E

M

D

A

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7 0
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It will take 13 weeks to save the money to buy the equipment because if you subtract 20 you get 55.25 then divide by 4.25 you get 13 <span />
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