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2 years ago

When figuring a tip at a restaurant it is customary to leave:

Mathematics

1 answer:

Vaselesa [24]2 years ago

3 0

Answer:

c. 15% or more

Step-by-step explanation:

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Can someone smart help me with this plz:)

insens350 [35]

Answer:

Step-by-step explanation:

Sum of all angles of triangle = 180°

6p + 6p + 3 p = 180

15p = 180

p = 180/15

p = 12

Angles are:

6p = 6*12 = 72°

3p = 3*12 = 36°

Angles are: 72°, 72° , 36°

6 0

3 years ago

Please help. 24 points!!

Lina20 [59]

The given function is,

$f(x)= \frac{2x-1}{x+5}$ .

Or, $y= \frac{2x-1}{x+5}$

To find the inverse of a function, first step is to switch x and y. Therefore,

$x= \frac{2y-1}{y+5}$

Next stpe is to solve the above equation for y t get the inverse f f(x). Hence, multiply each sides by y + 5 to get rid of fraction form. So,

$x*(y+5)= \frac{2y-1}{y+5}*(y+5)$

xy + 5x = 2y - 1

xy = 2y - 1 - 5x Subtract 5x from each sides to isolate y.

xy - 2y = -5x - 1 Subtract 2y from each sides.

y(x - 2) = -5x -1 Take out the common factor y.

$\frac{y(x-2)}{(x-2)} =\frac{(-5x-1)}{(x-2)}$ Divide each sides by x-2.

$y=\frac{(-5x-1)}{(x-2)}$

So, $f^-1(x)=\frac{-5x-1}{x-2}$

Now when we will compare $f^-1(x)=\frac{-5x-1}{x-2}$ with $f^-1(x)=\frac{ax+b}{cx+d}$ then we will get a = -5, b = -1, c = 1 and d=-2

So, $\frac{a}{c} =\frac{-5}{1} =-5$

Hope this helps you!

6 0

2 years ago

A survey of 500 college students moving into their dorm revealed that 425 brought a microwave, 380 brought a video game console,

tia_tia [17]

Answer:

0.90

Step-by-step explanation:

I’m doing the unit test

5 0

2 years ago

How to find the volume of a cone?<br> Height- 8 in.<br> Diameter- 7 in.

mestny [16]

The formula for the volume of a cone is V = $\pi r^{2} \frac{h}{3}$

So the answer is 102.63

4 0

3 years ago

Which function equation is represented by the graph?

Drupady [299]

The correct answer is C. <span>f(x)=20(35)x</span>

8 0

3 years ago