4 years ago

How to find the value of n

Mathematics

2 answers:

melisa1 [442]4 years ago

6 0

It depends on the type of equation

Tcecarenko [31]4 years ago

4 0

In order to answer this question, I need to know what the problem is in order to tell you.

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Write the result of (4+9i)(7-4i) in a+bi form

Serhud [2]

ANSWER

$(4 + 9i)(7 - 4i) = 64 + 47i$

EXPLANATION

The given complex number expression is:

$(4 + 9i)(7 - 4i)$

We expand using the distributive property to get;

$(4 + 9i)(7 - 4i) = 4(7 - 4i) + 9i(7 - 4i)$

$(4 + 9i)(7 - 4i) = 28- 16i + 63i - 36 {i}^{2}$

Recall that,

${i}^{2} = - 1$

Our expression now simplifies to:

$(4 + 9i)(7 - 4i) = 28 + 47i + 36$

$(4 + 9i)(7 - 4i) = 64 + 47i$

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4 years ago

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Answer: 3 2/3

2 1/ 5 divided by 3/5 = 11/5 divided by 3/5 = 11/5 x 5/3 = 11 x 5, 5 x 3 = 55/15 = 55 divided by 5, 15 divided by 5 = 11/3 = 3 2/3

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4 years ago

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I dont know how to delete

quester [9]

Answer:

2.68

Step-by-step explanation:

2/4=1.34/x

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