1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hitman42 [59]
3 years ago
14

Please answer this question

Mathematics
1 answer:
Gnesinka [82]3 years ago
3 0

Answer:

There are 20 kids total in the class.

Step-by-step explanation:

15/100 × 20 = 3  

You can use direct proportion for any percent calculation.

Compare each number with its percent.

3 i s  15 %  of what number? Let the number be  x

So, 3  represents  15 %  and  x  represents  100 %

x/ 100   =  3/15  

Multiply by  100  to isolate  x

x  = \frac{3 x 100}{15}

x  =  20

Check:  15/ 100 × 20 = 3

You might be interested in
A school club raises $506 to spend on a field trip. There are 23 people going on the trip. How much money did the club raise for
saveliy_v [14]

Answer:

$22  

Step-by-step explanation:

       Money raised = $506.

      People on trip = 23

Money per person = $506/23

Money per person = $22

3 0
2 years ago
Read 2 more answers
Help please..............
Aleonysh [2.5K]

Answer:

Basically ur wrong

Step-by-step explanation:

6 0
3 years ago
A bulletin board has a perimeter of 200 inches. Which expression expresses the area A(w) of the bulletin board as a function of
mr Goodwill [35]

Answer:

area A(w) of the bulletin board as a function of its width, w =[100-w]*w= 100w-w^{2}

Step-by-step explanation:

  • let, the shape of the bulletin board is a rectangle,
  • then the perimeter of it = sum of all sides

= 2[length+width] = 2[l+w]

(let l: length, w : width )

  • so, 200 = 2[l+w]

100= l+w ( dividing both the sides by 2)

so, l= 100-w

  • area = length*width=l*w=[100-w]*w
  • therefore,area A(w) of the bulletin board as a function of its width, w =[100-w]*w= 100w-w^{2}
6 0
2 years ago
(a) Describe a property specific to squares that is not a property specific to rectangles.
blondinia [14]

Answer:

Step-by-step explanation:

(a) A square has all the 4 sides being equal while a rectangle has four sides, with the opposite sides being parallel and the same length.

(b) The diagonals bisect the angles , the diagonals are perpendicular bisectors of each other

(c) A square has two pairs of parallel sides, four right angles, and all four sides are equal while the angles of a parallelogram are not right angles

(d) a rhombus can be a rectangle (if the angles of the rhombus are all 90 degrees), and a rectangle can be a rhombus (if the sides of the rectangle are all equal length). Opposite sides are parallel.

(e) a rhombus has two opposite internal angles of equal measure, a square has four right angles with equal measure

5 0
2 years ago
Read 2 more answers
Find the distance between the two points in simplest radical form (−6, 1) and (−8,−4)
Elena L [17]
<h2>=√(-8-(-6))^+(-4-1)^</h2><h2>=√(-2)^+(-5)^</h2><h2>= -2-5</h2><h2>= -7</h2>
7 0
3 years ago
Other questions:
  • Find the points on the surface y2 = 25 + xz that are closest to the origin.
    9·1 answer
  • What is the operation used in increased by
    10·2 answers
  • Please help!! I’m confused :(
    7·2 answers
  • In performing a chi-square goodness-of-fit test for a normal distribution, a researcher wants to make sure that all of the expec
    5·1 answer
  • Helppppppppp please:)
    6·1 answer
  • When should the direct pattern be used to communicate negative nows?
    7·1 answer
  • 4x - 2 - 1 = 2 hep plz
    12·2 answers
  • Who ever can answer questions 8,9, and 10 will get 34 pts
    7·1 answer
  • Here are four fractions. Write them small to large<br> 2/3<br> 3/5<br> 5/8<br> 7/11
    7·2 answers
  • Pls help 10 pts <br> NO LINKS
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!