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Y_Kistochka [10]
3 years ago
10

PLEASE HELP :: If 4-5i is a zero of a quadratic function with real coefficients, then ____ is also a zero. (Simplify your answer

. Type your answer in the form a+bi).
Mathematics
1 answer:
Virty [35]3 years ago
5 0
Answer is 4+5i

The reason is that if you have a zero that is imaginary number, than its conjugate value is also a zero of that function. Conjugate value of imaginary number you get simply when changing sign of imaginary part of imaginary number to opposite. in this case imaginary part is -5i so its conjugate value is +5i..
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I need help fast please I don’t understand this and I’ve been struggling for a while. Can I get a brain list please or a tutor t
solong [7]

Answer:

4 √6

Step-by-step explanation:

We have a few right triangles. We know that a²+b²=c², with c being the side opposite the right angle. Representing the side without a value as z, we have:

m²+z² = (8+4)² = 12²

4²+n²=z²

8²+n²=m²

We have 3 equations with 3 unknown variables, so this should be solvable. One way to find a solution is to put everything in terms of m and go from there. First, we can take n out of the equations entirely, removing one variable. We can do this by solving for it in terms of z and plugging that into the third equation, removing a variable as well as an equation.

4²+n²=z²

subtract 4²=16 from both sides

z²-16 = n²

plug that into the third equation

64 + z² - 16 = m²

48 + z² = m²

subtract 48 from both sides to solve for z²

z² = m² - 48

plug that into the first equation

m² + m² - 48 = 144

2m² - 48 = 144

add 48 to both sides to isolate the m² and its coefficient

192 = 2m²

divide both sides by 2 to isolate the m²

96 = m²

square root both sides to solve for m

√96 = m

we know that 96 = 16 * 6, and 16 = 4², so

m = √96 = √(4²*6) = 4 √6

5 0
2 years ago
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swat32

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3) Median (divides it in 1/2)

4) Both (divides it in 1/2 and makes a 90 degree angle w/ base)

5) Altitude (makes 90 degree angle w/ base)

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7) sqrt(24^2 + 18^2) = sqrt( 576 + 324) = sqrt(900) = 30

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9) sqrt(150^2 - 90^2) = sqrt(22500 - 8100) = sqrt(14400) = 120

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7 0
3 years ago
Isabel is using the TVM Solver on her graphing calculator as shown below to determine how much she has to invest now in a saving
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Answer:

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Step-by-step explanation:

Apex

3 0
3 years ago
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Marianna [84]

A. Commutative Property

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3 years ago
If u have 1 hundred and 14 tens and 8 ones what number would it make?
rewona [7]

Answer:

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Step-by-step explanation:

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4 0
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