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2 years ago

Help pleaseeeee????????????

Mathematics

1 answer:

gogolik [260]2 years ago

4 0

Answer:

y = 107 z = 73 x = 73

Step-by-step explanation:

Y and 107 are the same angle 107 + 73 = 180

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How to find the square root of complex numbers?? Find the square root of (6+8i) ??

ivann1987 [24]

Answer:

$2 \sqrt{2} + i \sqrt{2}$

Step-by-step explanation:

The square of a complex number is a complex number. Here, we have:

${(a + bi)}^{2} = 6 + 8i$

${a}^{2} + 2abi - {b}^{2} = 6 + 8i$

We then have this system of equations:

${a}^{2} - {b}^{2} = 6$

$2ab = 8$

Solving this system:

$ab = 4$

$b = \frac{4}{a}$

${a}^{2} - {( \frac{4}{a}) }^{2} = 6$

${a}^{2} - \frac{16}{ {a}^{2} } = 6$

${a}^{4} - 16 = 6{a}^{2}$

${a}^{4} - 6 {a}^{2} - 16 = 0$

$( {a}^{2} - 8)( {a}^{2} + 2) = 0$

${a}^{2} = 8$

$a = 2 \sqrt{2}$

$b = \frac{4}{2 \sqrt{2} } = \sqrt{2}$

6 0

2 years ago

Read 2 more answers

8/2 x 777/8 = What is it?

trasher [3.6K]

6216/16 is the answer the mixed number is 388 1/2

8 0

3 years ago

Please help meeeeeeeeeeeee directions: use substitution to solve the solution

dimaraw [331]

Answer:

(-3, 13)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Terms/Coefficients
Coordinates (x, y)
Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = -4x + 1

11y = x + 146

Step 2: Solve for x

Substitution

Substitute in y: 11(-4x + 1) = x + 146
Distribute 11: -44x + 11 = x + 146
[Addition Property of Equality] Add 44x on both sides: 11 = 45x + 146
[Subtraction Property of Equality] Subtract 146 on both sides: -135 = 45x
[Division Property of Equality] Divide 45 on both sides: -3 = x
Rewrite/Rearrange: x = -3

Step 3: Solve for y

Define original equation: y = -4x + 1
Substitute in x: y = -4(-3) + 1
Multiply: y = 12 + 1
Add: y = 13

3 0

2 years ago

Choose the correct solution set for each graph

Stolb23 [73]

Hello from MrBillDoesMath!

Answer:

Leftmost graph: x<= -2 or ( minus infinity, -2]

Middle graph: (-5, infinity)

Right graph: (-2, 3)

Discussion:

I n the graphs the white circle means that value is NOT included in the set. For example, In the Right graph the values -2 and +3 (the "endpoints") are NOT included in the solution set.

In graphs ")" means the value is NOT included but "]" (the square bracket) means the value IS included.

Regards,

MrB

P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!

4 0

3 years ago

Read 2 more answers

Find the equation of a line that is parallel to the line x = -11 and contains the point (-3,9)

Arisa [49]

Answer:

x = -3

Step-by-step explanation:

the lines in the form:

y = a , where a is a constant is a horizontal line

and

x = b, where b is a constant is a vertical line

To find lines that are parallel to the horizontal and vertical lines with point given (n,p), we follow the rule below:

1. If we have a line y = a and goes through point (n,p), the parallel line will have equation y = p

2. If we have a line x = b and goes through the point (n,p), the parallel line will have equation x = n

Now, this question gives a vertical line x = -11 and we need to find line parallel to this that goes through (-3,9). So, from RULE #2 above, we can say the parallel line's equation would be:

x = -3

7 0

3 years ago