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3 years ago

10

Question 3 (5 points)

1 answer:

Nezavi [6.7K]3 years ago

4 0

Yes you start and then and then you start and then end

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What are the solutions of the equation x4 + 3x2 + 2 = 0? Use u substitution to solve.

Julli [10]

ANSWER

$x = \: x = \pm \: \sqrt{2} i \: or \: x = \pm \: i$

EXPLANATION

${x}^{4} + 3 {x}^{2} + 2 = 0$

${ ({x}^{2}) }^{2} + 3( {x}^{2}) + 2 = 0$

Let

$u = {x}^{2}$

Then the equation becomes:

${u}^{2} + 3u + 2 = 0$

${u}^{2} + 3u + 2 = 0$

${u}^{2} + 2u +u + 2 = 0$

Factor:

${u}(u + 2)+ 1(u + 2) = 0$

$(u + 1)(u + 2) = 0$

$u = - 1$

or

$u = - 2$

This implies that

${x}^{2} = - 1 \implies \: x = \pm \: i$

or

${x}^{2} = - 2 \implies \: x = \pm \: \sqrt{2} i$

3 0

3 years ago

How do you finish graphing your line?

Elan Coil [88]

Answer:

Step-by-step explanation:

Step 1: Identify the variables

Step 2: Determine the variable range

Step 3: Determine the scale of the graph

Step 4: Number and label each axis and title the graph

Step 5: Determine the data points and plot on the graph

Step 6: Draw the graph

3 0

2 years ago

What is 0.285714 as a fraction not simplified

MrRa [10]

Answer:

2/7

Step-by-step explanation:

I am assuming that you mean 285714 repeating.

You just have to memorize or learn to recognize the order of decimal digits for fractions over 7, unless you want to do it algebraically.

1/7=0.142857 repeated

2/7=0.285714 repeated and so on

8 0

3 years ago

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

konstantin123 [22]

Consider the given parallelogram KLMN.

Prove: $\angle N \cong \angle L, \angle K \cong \angle M$

Statement Reason

1. $KL \parallel NM, KN \parallel LM$ Definition of parallelogram

2. $\angle K+ \angle N = 180^\circ$ Same Side interior angle theorem

$\angle L+ \angle M = 180^\circ$

$\angle K+ \angle L = 180^\circ$

3. $\angle K+ \angle N=\angle K+ \angle L$ Substitution property

$\angle L+ \angle M=\angle K+ \angle L$

4. $\angle N = \angle L$ Subtraction property of equality

$\angle M = \angle K$

Subtraction property of equality tells us that if we subtract some number from one side of an equation, we also must subtract from the other side of the equation to keep the equation the same.

5. $\angle N \cong \angle L$ Angle Congruence Postulate

$\angle M \cong \angle K$

When two angles are equal, then they are said to be congruent by Angle congruence postulate.

3 0

3 years ago

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Need help ASAP!!!!!!!!!

natima [27]

Answer:

Step-by-step explanation:

Good luck

7 0

3 years ago

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