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3 years ago

Mrs. Martin paid $125 to have you hair colored and cut. If she tips you hairdresser 18%, what is you total bill?

Mathematics

2 answers:

Serjik [45]3 years ago

8 0

Answer:

$147.5

Step-by-step explanation:

Oduvanchick [21]3 years ago

6 0

Answer:

22.5

Step-by-step explanation:

MATHHHHHHH!!!!!!!!!!!!

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In order for a function to be one-to-one, no two elements of the range may be paired with the same value of the domain AND no tw

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A True
The first condition gives that the function is in fact a function and the second condition makes it a one to one

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4 years ago

What's the slope of line parallel to the line x-4 = -6

antoniya [11.8K]

Answer:

Parallel slope is undefined.

Step-by-step explanation:

x - 4 = -6

x = -2

Slope does not exist.

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3 years ago

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Svet_ta [14]

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3 years ago

Solve for x and y 1/(x+yi) + 2/(x-yi) = 1+i

aliina [53]

Answer:

Step-by-step explanation:

x+i*y≠0 ==> x≠0 and y≠0

x-i*y≠0 ==> x≠0 and y≠0

We must exclude (0,0) as solution.

$\dfrac{1}{x+i*y} +\dfrac{2}{x-i*y} =1+i\\\\\dfrac{1*(x-i*y)}{(x+i*y)(x-i*y)} +\dfrac{2*(x+i*y)}{(x-i*y)(x+i*y)} =1+i\\\\\\\dfrac{x-i*y+2x+2i*y}{x^2+y^2} =1+i\\\\3x+i*y=(1+i)(x^2+y^2)\\\\3x+i*y=(x^2+y^2)+i(x^2+y^2+i*(x^2+y^2)\\\\\left\{\begin{array}{ccc}3x&=&x^2+y^2\\y&=&x^2+y^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\3x&=&x^2+9x^2\\\end {array}\right.\\\\\\\left\{\begin{array}{ccc}y&=&3x\\x(10x-3)&=&0\\\end {array}\right.\\\\$

$\left\{\begin{array}{ccc}x&=&0\\y&=&0\\\end {array}\right.\ (to\ exclude) \ or \ \left\{\begin{array}{ccc}x&=&\dfrac{3}{10}\\\\y&=&\dfrac{9}{10}\\\end {array}\right.\\\\Sol=\{(\dfrac{3}{10},\dfrac{9}{10})\}\\$

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3 years ago

PLEASE HELP. What is the value of X in the photo below? (please show work)

Tom [10]

Value of x is 5. I remember doing this last year..

35a+45b=80

then we would do 99-80, and that gives us the value of c, 19

5 0

3 years ago