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laiz [17]
3 years ago
8

Help me please,Thanks

Mathematics
2 answers:
Rashid [163]3 years ago
8 0
It Is B But I Just Wanted to tell you That Using Brainly for K12 Is not Aloud So Don't do it Ok
Anna71 [15]3 years ago
7 0
She has 7 more to pack
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A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec
Paraphin [41]

Answer:

A. The solutions are x=3i,\:x=-3i.

B. The factored form of the quadratic expression x^2+9=(x-3i)(x+3i)

Step-by-step explanation:

A. To find the solutions to the quadratic equation x^2+9=0 you must:

\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}

x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i

The solutions are:

x=3i,\:x=-3i

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor x^2+9:

First, multiply the constant in the polynomial by i^2 where i^2 is equal to -1.

x^2+9i^2

Since both terms are perfect squares, factor using the difference of squares formula

a^2-i^2=(a+i)(a-i)

x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)

5 0
3 years ago
(4×⁴+3׳+2ײ-×+1)+(5ײ-2×+3)​
Annette [7]

Answer:

4×⁴+3׳+7ײ-3x+4

Step-by-step explanation:

First remove the parentheses and pair up like terms

4×⁴+3׳+2ײ+5ײ-x-2x+1+3

Then combine the like terms

4×⁴+3׳+7ײ-3x+4

Which is the answer.

3 0
3 years ago
Spencer needs 2 gallons of paint to create a mural. He has 3/8 gallon of yellow and 1/4 gallon of blue paint. Drag amounts of pa
boyakko [2]

Answer:

He currently has 5/8 of a gallon. He needs 11/8 more paint to finish his mural.

Add 11/8 gallons or 5/4 and 1/8 of a gallon.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Math help plsss brainliest answer???
Shalnov [3]
Hello,


See this file.
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7 0
3 years ago
HELPPP<br> Please help it’s due soon and I have no idea
Vinvika [58]

From the two triangle, we can see that triangle ADE is a dilation of triangle ABC by a scale factor of 2.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

From the diagram:

AB = 3 units, AC = 4 units. Using Pythagoras theorem:

BC² = 3² + 4²

BC = 5 units

AE = 6 units, AD = 8 units. Using Pythagoras theorem:

DE² = 6² + 8²

DE = 10 units

From the two triangle, we can see that triangle ADE is a dilation of triangle ABC by a scale factor of 2.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

5 0
2 years ago
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