3 years ago

Characteristics of Relations

Mathematics

1 answer:

eduard3 years ago

8 0

Its not function at all

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Find the complex zeros of the following polynomial function.

GalinKa [24]

Answer:

$x=\frac{-1\pm\sqrt{3}i}{2}$

Step-by-step explanation:

$f(x)=x^3-1$

$0=x^3-1$

$0=(x^2+2x+1)(x-1)$

$x-1=0$

$x=1$ <-- Real Solution

$x^2+x+1=0$

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-2\pm\sqrt{2^2-4(1)(1)}}{2(1)}$

$x=\frac{-1\pm\sqrt{1^2-4(1)(1)}}{2(1)}$

$x=\frac{-1\pm\sqrt{1-4}}{2}$

$x=\frac{-1\pm\sqrt{-3}}{2}$

$x=\frac{-1\pm\sqrt{3}i}{2}$ <-- Complex Solutions

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3 years ago

A 90% confidence interval is (35 45). What is the margin of error?

Sergio039 [100]

Answer:

option a 5......

...

I hope it's correct

7 0

3 years ago

Can you help me with this its easy

Darina [25.2K]

Answer:

C. 1/8

Step-by-step explanation:

You gotta find the LCD and combine

4 0

3 years ago

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Solve by Elimination<br> 2x+5y=9<br> 3x-5y=11

shepuryov [24]

Answer:

x = 4 , y = ⅕

Step-by-step explanation:

2x + 5y = 9 (1)

3x - 5y = 11 (2)

Add (1) and (2)

5x = 20

x = 4

Using (1), find y

2(4) + 5y = 9

5y = 1

y = ⅕

8 0

3 years ago

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the tickets for a dance recital cost $5.00 for adults and $2.00 for children. if the total number of tickets sold was 295 and th

alukav5142 [94]

210 adult tickets
85 children tickets
210 x $5 = $1,050
85 x $2 = $170
1,050 + 170 =1,220

8 0

3 years ago