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2 years ago

How do i solve 2i x 3i

Mathematics

2 answers:

Ivahew [28]2 years ago

7 0

Answer:

it's 6

Step-by-step explanation:

2*3 is 6 and I*I is i^2 which equals to 1 so overall 6

nadya68 [22]2 years ago

5 0

Answer:

-6

Step-by-step explanation:

2i* 3i

Multiply the numbers 2*3 = 6

Multiply the imaginary number i*i = i^2

We know that i^2 = -1

6* i^2 = 6*-1 = -6

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After swimming 50 feet below the surface of the water, a

marissa [1.9K]

Answer:

20, c

Step-by-step explanation:

50-30=20 Go 50 down a number line from 50, you're at 0, then go back up 30. Where are you at? 20 Hope this helps! Have a good day! :)

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2 years ago

Please answer this one, I’m in math grade 9 having online classes i need your help for this one. Asap thanksss

ICE Princess25 [194]

Answer:

1) b

2)d

3)a

Step-by-step explanation:

1) count the number of different betwwen 2 cycles

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2 years ago

What is the sum of 20x^2-10x-30

ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

The correct question is

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

$ax^{2} +bx+c=0$

The sum of the roots is equal to

$-\frac{b} {a}$

in this problem we have

$20x^{2} -10x-30=0$

$a=20\\b=-10\\c=-30$

substitute

$-\frac{(-10)} {20}=0.5$

Verify

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

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

$a=20\\b=-10\\c=-30$

substitute

$x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}$

$x=\frac{10\pm\sqrt{2,500}} {40}$

$x=\frac{10\pm50} {40}$

$x=\frac{10+50} {40}=1.5$

$x=\frac{10-50} {40}=-1$

The roots are x=-1 and x=1.5

The sum of the roots are

$-1+1.5=0.5$ ----> is ok

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3 years ago

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pochemuha

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2 years ago

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maw [93]

Answer:

i think thats gonna be (1,6)

Step-by-step explanation:

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2 years ago