3 years ago

Mira has breakfast at a restaurant.She leaves a 20%tip of $1.80. What is the price of Mira’s breakfast,before tip?

Mathematics

1 answer:

GarryVolchara [31]3 years ago

6 0

Answer:

Step-by-step explanation:

20% goes into a 100 5 times, multiply 1.80 *5 to get 9, this is how i got my answer

hope it helps :)

You might be interested in

Intr-o clasa snt 35 de elevi .nr fete este egal cu 75 la suta din nr baietilor .aflati nr baietilor

Zanzabum

Salut!

b=baiat

f=fata

In clasa sunt 35 elevi.

75/100 x b=f

3b/4=f

3b=4f

b+f=35

3b+3f=105

7f=105

f=15

b=35-15

b=20

Succes!

5 0

3 years ago

The cost of a week long vacation in a city has a mean of 1000 and a variance of 1200. The city imposes a tax which will raise al

matrenka [14]

Answer:

The coefficient of variation after the tax is imposed is 0.033

Step-by-step explanation:

Given

$\mu =1000$ --- mean

$\sigma^2 = 1200$ --- variance

$tax = 10\%$

Required

The coefficient of variation

The coefficient of variation is calculated using:

$CV = \frac{\sqrt{\sigma^2}}{\mu}$

After the tax, the new mean is:

$\mu_{new} = \mu * (1 + tax)$

$\mu_{new} = 1000 * (1 + 10\%)$

$\mu_{new} = 1100$

And the new variance is:

$\sigma^2_{new} = \sigma^2 * (1 + tax)$

$\sigma^2_{new} = 1200 * (1 + 10\%)$

$\sigma^2_{new} = 1320$

So, we have:

$CV = \frac{\sqrt{\sigma^2}}{\mu}$

$CV = \frac{\sqrt{1320}}{1100}$

$CV = \frac{36.33}{1100}$

$CV = 0.033$

6 0

3 years ago

Let f(x) = x – 3 and g(x) = x + 11. Find f(x) • g(x).. . A] x2 – 8x – 33. . B] x2 – 8x + 14. . C] x2 + 8x + 14. . D] x2 + 8x – 3

Katarina [22]

F(x) = x-3 and g(x) = x+11

f(x) *g(x) = (x-3)(x+11) = x^2 +11x -3x -33 = x^2 +8x -33

so choice D. is right

hope helped

3 0

3 years ago

Read 2 more answers

What is the vertex of f(x)= -3/4|x|+7? also how do i graph it?

Harrizon [31]

Rewrite in standard form and use this form to find the vertex

(h,k).(0,7)

then just graph the (0,7) the just down cross the line down like a triangle

7 0

3 years ago

The radius of a circle is 6. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diam

Vikki [24]

I believe C/12=pi which means the answer would be B.

6 0

3 years ago

Read 2 more answers