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3 years ago

Ali and Tibor get paid $9 per hour. This week, Tibor made an additional $27 in overtime.

1 answer:

4 0

9a + (9t+27)=x

To write it another way you could flip the numbers around:

(9t+27)+9a=x

Or flip the variable to the other side.

x=9a + (9t+27)

Any way you put the numbers as long as x is on the either side, you will get the same answer.

Hope this helps!

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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

1 year ago

Read 2 more answers

Find f(-2) for the function f(x)=x^2-6

lorasvet [3.4K]

You would subitute -2 for x in the equation
f(-2)=x^2-6
PEMDAS so exonents
-2^2-6
negative times a negative= positive
4-6
f(-2)=-2

f(x) means that you subsitute x for x in the equation exg
f(1)=x+2 means f(1)=1+2
f(4)=x+2 means f(4)=4+2

4 0

2 years ago

Shirley has a collection of 50 stamps and adds 4 stamps daily to her collection. model this situation as a function of number of

kompoz [17]

Stamps - S

S= 50+ 4d

Sorry if I’m wrong

4 0

1 year ago

What are the solutions to (x + 7)2 = 81?

koban [17]

Answer:

the solutions are c because, when we say x +7=81 that will give us 74 which is there on c

4 0

2 years ago

Which of the following is not represented in the

morpeh [17]

Answer:

Line segment CD and Line BC are not represented.

Step-by-step explanation:

Line segment CD is not represented because a line segment is a portion of a line that has 2 distinct end points.

Line BC is not represented because a line is a straight path that has no beginning nor an end

Ray BC is represented because a ray is a part of a line which has one end point and extends infinitely in one direction.

Point B is represented because we can see a dot at B indicating that B is a point.

7 0

2 years ago