3 years ago

Lines A , B , C , D PLEASE SEE THE PICTURE HELP PLEASE

Mathematics

1 answer:

zepelin [54]3 years ago

3 0

Answer:

the last one is correct answer

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Alex and Ben shares £520 in the ratio 1:3.<br> What fractions of the £520 does Ben receive?

Arisa [49]

Ben would receive £390 while Alex would only receive £130

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3 years ago

Find the missing side. <br> Need help please.<br> Need to show how to get the answer.

Nutka1998 [239]

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Step-by-step explanation:

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3 years ago

Solve x2 + 2x = 4 for x by completing the square. x equals plus or minus square root of 5 plus 1 x equals plus or minus square r

steposvetlana [31]

Answer:

x equals plus or minus square root of 5 minus 1

Step-by-step explanation:

we have

$x^{2} +2x=4$

Divide by 2 the coefficient of the x-term

$2/2=1$

squared the number

$1^2=1$

Adds both sides

$x^{2} +2x+1=4+1$

$x^{2} +2x+1=5$

Rewrite as perfect squares

$(x+1)^{2}=5$

take the square root both sides

$x+1=(+/-)\sqrt{5}$

$x=(+/-)\sqrt{5}-1$

therefore

x equals plus or minus square root of 5 minus 1

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3 years ago

Plz help question below

hammer [34]

Plan B. to me is he obvious answer.

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A fourth degree polynomial with real coefficients can have -4, 8i,+4i, and as its zeros. True or false? Justify your answer.

liraira [26]

You didn't give the fourth zero, but the answer is still false. If you have a root or an imaginary number as a zero, then its conjugate is also a zero. So if 8i is a zero, then -8i must also be a zero, and if 4i is a zero, then -4i must be a zero, with those zeros and -4, the number of zeroes exceeds the number of zeroes that a fourth degree polynomial can have.

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3 years ago