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gogolik [260]
3 years ago
13

Mira has breakfast at a restaurant. She leaves a 20% tip of

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

$9

Step-by-step explanation:

set up a proportion where 20% is represented as 20/100 and set it equal to 1.80/x

cross multiply and you should get 180=20x

divide by 20 to solve for x

you then get 9, which is the amount you were looking for

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Evaluate sin 300° without using a calculator.
Anni [7]

Answer:

-\sqrt{3} /2

Step-by-step explanation:

300 degrees is in the fourth quadrant (it's between 270 and 360); sine is negative in the fourth quadrant.

Given we're in the fourth quadrant, the reference angle is 360 - 300 = 60 degrees

sin(60°) = \sqrt{3} /2

And since sine is negative, this value turns negative:

sin(300°) = -\sqrt{3} /2

3 0
3 years ago
Are these lines perpendicular? yes or no?<br> y= 4x+2<br> y= (-1/4)x+12
antoniya [11.8K]

Answer: yes

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS THANKS
stich3 [128]

Answer:

The answer to your question is Volume = 12735.06 cm³

Step-by-step explanation:

Data

a = 11.26 cm

s = 13 cm

h = 29 cm

Formula

V = BH

Process

1.- Calculate the area of the base

Area = B = Pa/2

P = Perimeter

P = 6(13)

P = 78 cm

Area = (78)(11.26)/2

        = 878.28/2

       = 439.14 cm²

2.- Calculate the volume

Volume = BH

             = (439.14)(29)

             = 12735.06 cm³

7 0
3 years ago
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What is the simplified form of 12z^2-7z-12/3z^2+2z-8? ...?
gavmur [86]
It should go like this:

(4z + 3) (3z - 4) / (3z - 4) (z + 2)

Then you just cancel out (3z -4) and (3z -4), and the final simplified form of this polynomial is:

(4z +3) / (z + 2)
4 0
4 years ago
What is -212+(-102)?​
hram777 [196]

Answer:

-212+(-102) = -212-102

= -314

Hope this helps!

4 0
3 years ago
Read 2 more answers
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