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Marat540 [252]
2 years ago
11

A shop owner offered a 20% discount off the regular price of a mirror. The amount of the discount is $3.

Mathematics
1 answer:
yarga [219]2 years ago
6 0

Answer:

A. 15

Step-by-step explanation:

Multiply .2 by each value you have.

So 0.2 * 15=3

0.2 * 6=1.2

0.2 * 9=1.8

0.2 * 18=3.6

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a movie theater has 15 rows of State each rows have 24. if there where 28 empty seats during one show how many people where ther
ale4655 [162]

Answer:

332

Step-by-step explanation:

To find how many seats there were, multiply the number of rows with the number of seats in each row:

15 (24) = 360

From these total seats, there are 28 empty seats, meaning:

360 - 28 = 332

There were 332 people.

4 0
3 years ago
What radius of a circle is required to inscribe an equilateral triangle with an area of 270.633 cm2 and an altitude of 21.65 cm?
adoni [48]
1. 
<span>All three angles are equal and their sum is 180. </span>
<span>3 (3x-12) = 180 </span>
<span>9x -36 = 180 </span>
<span>9x = 180+36 </span>
<span>9x = 216 </span>
<span>x = 216/ 9 = 24 </span>

<span>2. </span>
<span>Area of an equilateral triangle = (sqrt(3)/4 ) s^2 = 270.633 </span>
<span>s^2 = 270.633 / [ sqrt(3) /4] </span>
<span>s^2 = (4)(270.633) / sqrt(3) </span>
<span>s^2 = 625 </span>
<span>s = 25 (side) </span>

<span>Follow the procedure in the link: we don't need the altitude. </span>
<span>r = 25/sqrt(3) =14.43 

</span>
7 0
3 years ago
Read 2 more answers
Which formula is correct ?
larisa86 [58]

Answer:

The first answer choice

Step-by-step explanation:

Formula for volume of a rectangular pyramid is V=lwh/3

6 0
2 years ago
If 1/2 of the students in the class like cookies and 3/4 of those who like cookies, also like ice cream, what fraction of the cl
Annette [7]

Answer:

75/2 or 37.5

Not sure if this is what you're looking for but i hope it helps anyway.

7 0
3 years ago
You are trying to save $20 a week to buy a new cd player. during the last 4 weeks youhave saved $35, $15, $10, and $12. how much
goblinko [34]
You need to save $28.

3 0
3 years ago
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