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avanturin [10]
3 years ago
6

Pleaseee helppp

Mathematics
1 answer:
dybincka [34]3 years ago
8 0

Answer:

C

Step-by-step explanation:

all the options can give 9m+27 except C; 9m+12

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M is a degree 3 polynomial with m ( 0 ) = 53.12 and zeros − 4 and 4 i . Find an equation for m with only real coefficients (i.E.
Nitella [24]

Answer:

Therefore the required polynomial is

M(x)=0.83(x³+4x²+16x+64)

Step-by-step explanation:

Given that M is a polynomial of degree 3.

So, it has three zeros.

Let the polynomial be

M(x) =a(x-p)(x-q)(x-r)

The two zeros of the polynomial are -4 and 4i.

Since 4i is a complex number. Then the conjugate of 4i is also a zero of the polynomial i.e -4i.

Then,

M(x)= a{x-(-4)}(x-4i){x-(-4i)}

      =a(x+4)(x-4i)(x+4i)

      =a(x+4){x²-(4i)²}      [ applying the formula (a+b)(a-b)=a²-b²]

      =a(x+4)(x²-16i²)

      =a(x+4)(x²+16)      [∵i² = -1]

      =a(x³+4x²+16x+64)

Again given that M(0)= 53.12 . Putting x=0 in the polynomial

53.12 =a(0+4.0+16.0+64)

\Rightarrow a = \frac{53.12}{64}

      =0.83

Therefore the required polynomial is

M(x)=0.83(x³+4x²+16x+64)

5 0
3 years ago
Help me please I will give brainlest!
Makovka662 [10]
2(x+7)3X



I think... look it up  though to be sure
8 0
3 years ago
Read 2 more answers
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Anestetic [448]

Answer:

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do u ilke it

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
13x+15=11x-25<br><br> 5t-5=5t+7<br><br> Please show steps for both <br> Thank you
Tanzania [10]
I hope this helps you



13x-11x=-25-15


2x=-40


x=-20


5t-5t=7+5


0=12 false
3 0
3 years ago
Barbra bought 2 greetings cards at $1.50 each, 3 packages of wrapping paper at $2.29 each and 1 roll of ribbon for $1.45. How mu
koban [17]

Answer:

$11.32

Step-by-step explanation:

Greeting Cards = $1.5 x 2 = $3

Wrapping Paper = $2.29 x 3 =  $6.87

Ribbon = $1.45 x 1 = $1.45

So now we must add the totals to figure out how much money Barbra spent in total.

$3 + $6.87 + $1.45 = $11.32

3 0
2 years ago
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