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4 years ago

What is the solution to the system of equations? {2x+3y=23 4x−5y=13

Mathematics

1 answer:

Sliva [168]4 years ago

3 0

The answer is (7, 3)

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Which of these is a complex number? <br><br> A. <br><br> B. <br><br> C. <br><br> D.

Step2247 [10]

Answer:

option D

$\frac{8}{3} + \sqrt{\frac{-7}{3} }$

Step-by-step explanation:

Given in the question are 4 number

5√1/3 - $\frac{9}{\sqrt{7} }$

2 - $\frac{1}{\sqrt{11} }$

9 + $3\sqrt{\frac{5}{2} }$

$\frac{8}{3} + \sqrt{\frac{-7}{3} }$

A Complex Number is a combination of a Real Number and an Imaginary Number

<h3>Example </h3>

a + ib

where a is real number

b is imaginary number

i is 'lota' which is √-1

<h3>So according to the definition above </h3>

$\frac{8}{3} + \sqrt{\frac{-7}{3} }$ is complex number in which

$\frac{8}{3}$ is real part

$\sqrt{\frac{7}{3} } \sqrt{-1}$ = $\sqrt{\frac{7}{3} } i$ is the imaginary part

7 0

4 years ago

What does the expression 0.65d represent

castortr0y [4]

Answer:

decrease by 35%

Step-by-step explanation:

0.65 is only 65% of a whole number, so it decreases the original number by 35%

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Airida [17]

A is the answer to this question

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3 years ago

List the PROs and CONs of using coal as a power source.

Anna11 [10]

Answer:

pros:Affordability,Known technologies,Safety.

cons:Greenhouse gas emissions,Mining destruction,Emission of harmful substances.

Step-by-step explanation:

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ohaa [14]

3x+0=4+y " "3x=<span>4+y the answer
</span>

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4 years ago

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