3 years ago

Help me on number four and six please

Mathematics

1 answer:

oee [108]3 years ago

3 0

For number six it's D

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What is 1/10 of 1000 what is 1% out of 100

Ulleksa [173]

To get 1/10 -> 1000/10 =100
and 1% of 100 -> 100/100 = 1 or 1%

100 for question 1
1 for q2

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3 years ago

How to find the square root of complex numbers?? Find the square root of (6+8i) ??

ivann1987 [24]

Answer:

$2 \sqrt{2} + i \sqrt{2}$

Step-by-step explanation:

The square of a complex number is a complex number. Here, we have:

${(a + bi)}^{2} = 6 + 8i$

${a}^{2} + 2abi - {b}^{2} = 6 + 8i$

We then have this system of equations:

${a}^{2} - {b}^{2} = 6$

$2ab = 8$

Solving this system:

$ab = 4$

$b = \frac{4}{a}$

${a}^{2} - {( \frac{4}{a}) }^{2} = 6$

${a}^{2} - \frac{16}{ {a}^{2} } = 6$

${a}^{4} - 16 = 6{a}^{2}$

${a}^{4} - 6 {a}^{2} - 16 = 0$

$( {a}^{2} - 8)( {a}^{2} + 2) = 0$

${a}^{2} = 8$

$a = 2 \sqrt{2}$

$b = \frac{4}{2 \sqrt{2} } = \sqrt{2}$

6 0

2 years ago

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Helppp mee asap !!!!!!

weqwewe [10]

Hyfgjgfthkok Hendrix djdhfnf fjfjfnfj fnnnnf fjjfjfnf fjfjfnfj

3 0

3 years ago

4(9x + 7) = x - 4<br><br> ALGEBRA 1!!

tiny-mole [99]

Hey!

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Solution:

4(9x + 7) = x - 4

36x + 28 = x - 4

36x + 28 + 28 = x - 4 + 28

36x = x + (-32)

36x - x = x - (-24) - x

35x = -32

35x/35 = -32/35

x = -32/35

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

Answer:

x = -32/35

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

Hope This Helped! Good Luck!

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3 years ago

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1/4 + 3 = ??<br> What’s the answer??

murzikaleks [220]

Answer:

3.25

Step-by-step explanation:

divide then add 3

5 0

3 years ago

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