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Masteriza [31]
3 years ago
11

I NEED THE ANSWER ITS DUE SOON !!! Points will be rewarded

Mathematics
1 answer:
DENIUS [597]3 years ago
3 0

Answer:

Jaden added instead of subtracting 23 and 5

Step-by-step explanation:

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. Andrew made an error in determining the polynomial equation of smallest degree whose roots are 3, 2+2i
KIM [24]

Answer:

Error of Andrew: Made incorrect factors from the roots

Step-by-step explanation:

Roots of the polynomial are: 3, 2 + 2i, 2 - 2i. According to the factor theorem, if a is a root of the polynomial P(x), then (x - a) is  a factor of P(x). According to this definition:

(x - 3) , (x - (2 + 2i)) , (x - (2 - 2i)) are factors of the required polynomial.

Simplifying the brackets, we get:

(x - 3), (x - 2 - 2i), (x - 2 + 2i) are factors of the required polynomial.

This is the step where Andrew made the error. The factors will always be of the form (x - a) , not (x + a). Andrew wrote the complex factors in form of (x + a)  which resulted in the wrong answer.

So, the polynomial would be:

(x - 3)(x - 2 - 2i)(x - 2+2i)=0\\\\ (x-3)(x^{2}-2x+2xi-2x+4-4i-2xi+4i-4i^{2})=0\\\\ (x-3)(x^{2}-4x+4+4)=0\\\\ (x-3)(x^{2}-4x+8)=0\\\\ x^{3}-4x^{2}+8x-3x^{2}+12x-24=0\\\\ x^{3}-7x^{2}+20x-24=0

7 0
3 years ago
The given equation has been solved in the table. Step Statement 1 1 –7n + 11 = -10 2. -7n + 11 – 11 = -10 – 11 3 -7n = -21 4 = =
Mrac [35]

Answer:

In step 2, the subtraction property of equality was applied

In step 4, the division property of equality was applied

Step-by-step explanation:

5 0
3 years ago
What number is 30% of 68?
natka813 [3]
30%of 68 = 30/100*68= 3*68/10=204/10=20.4
6 0
3 years ago
Read 2 more answers
Solve the equation for (x) and simplify. (7X/6) = (5//2),x
Sunny_sXe [5.5K]
15/7 might be the answer I’m not sure
3 0
2 years ago
Which statement is best represented by the inequality d>11?
ankoles [38]

For this case we have the following inequality:d> 11

Assuming that "d" is the variable that represents the number of hours worked by Mo during this week, we have that the hours were greater than 11, according to the inequality sign.

So, the correct option is:

Mo worked more than 11 hours this week.

Answer:

Option A

5 0
3 years ago
Read 2 more answers
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