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ExtremeBDS [4]
2 years ago
8

A number that is the product of a number and a counting number is called a

Mathematics
1 answer:
Dmitrij [34]2 years ago
3 0

Answer: A multiple of a number is the product of the number and a counting number. So a multiple of 3 would be the product of a counting number and 3 .

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Which equation has the solutions x = -3 ± √3i/2 ?
Maurinko [17]

Answer:Answer is option C : [x^{2} + 3x + 3 ] =0

Note:  None of options matches with given question.

instead of "-3" , there should be "-\frac{3}{2}".

Step-by-step explanation:

Note:  None of options matches with given question.

instead of "-3" , there should be "\frac{3}{2}".  

Here, First thing you have to observe the nature of roots.

∴ x = -\frac{3}{2}+\frac{\sqrt{3}}{2}i and x = -\frac{3}{2}-\frac{\sqrt{3}}{2}

∴ [ x+(\frac{3}{2}-\frac{\sqrt{3}}{2}i) ][ x+(\frac{3}{2}+\frac{\sqrt{3}}{2}i) ]=0

∴ [ x^{2} + x(\frac{3}{2}+\frac{\sqrt{3}}{2}i)+ x(\frac{3}{2}-\frac{\sqrt{3}}{2}i) + (\frac{3}{2}-\frac{\sqrt{3}}{2}i)(\frac{3}{2}+\frac{\sqrt{3}}{2}i) ]=0

∴ [x^{2} + \frac{3}{2}x + \frac{\sqrt{3}}{2}ix + \frac{3}{2}x - \frac{\sqrt{3}}{2}ix + (3-\frac{\sqrt{3}}{2}i)(3+\frac{\sqrt{3}}{2}i) ] =0

∴ [x^{2} + 3x + (\frac{3}{2}-\frac{\sqrt{3}}{2}i)(\frac{3}{2}+\frac{\sqrt{3}}{2}i) ] =0

∴ [x^{2} + 3x + \frac{9}{4} - (\frac{\sqrt{3}}{2}i)(\frac{\sqrt{3}}{2}i) ] =0

∴ [x^{2} + 3x + \frac{9}{4} - (\frac{3}{4}) i^{2} ] =0

∴ [x^{2} + 3x + \frac{9}{4} + (\frac{3}{4}) ] =0

∴ [x^{2} + 3x + \frac{12}{4} ] =0  

∴ [x^{2} + 3x + 3 ] =0  

Thus, Answer is option C : <em>[x^{2} + 3x + 3 ] =0  </em>

6 0
3 years ago
PLZ HELP!This is my only question left!!! plzzzzz
hram777 [196]

Answer:

12.84 degrees

Step-by-step explanation:

sin(x)=2/9

5 0
2 years ago
Laura retired from her job recently, and she has saved about $396,460.00 over the course of her career. She plans to withdraw $1
Tomtit [17]
So she has 396460
she will withdarw 1700 per month, and withdraw is loss or minus or (-)

after x months, she has 359060 left so

total-withdrawn=remaining
withdrawwn=1700 times months so withdrawn=1700x
total-1700x=remaining
total=396460
reaining=359060
subsitute
isolate x then divide is the strategy

396460-1700x=359060
add 1700x to both sides
396460=359060+1700x
subtract 359060 from both sides
37400=1700x
divide both sides by 1700
22=x

she has been retired for 22 months
7 0
3 years ago
Read 2 more answers
What is the y-intercept of the graph of the function f(x) = x^2+3x+5
Amanda [17]

Answer:

5

Step-by-step explanation:

Plug x in as 0.

f(x)=0+0+5

f(x)=5

6 0
3 years ago
Translate each sentence into an equation. Then find each number. The difference between four times a number and six is –46.
4vir4ik [10]

Equation: 4x - 6 = -46

Solution:

4x - 6 = -46

4x = -40

\frac{4x}{4} =\frac{-40}{4}

x = -10

7 0
3 years ago
Read 2 more answers
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