answer.
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
Marat540 [252]
2 years ago
9

The ratio of boys to girls in a certain classroom was 2 : 3. If boys represented five more than one third of the class, how many

people were there in the classroom?
Mathematics
1 answer:
Tju [1.3M]2 years ago
6 0
Let the no. Of boys=x and that of girls=y.
The total no. Of students = x+y .
As given by statement the no. Of boys=x={(x+y)/3} + 5
This implies that
X=(x+y+15)/3
Also we know that x/y = 2/3 therefore
From this equation we get x=2y/3 and y=3x/2
By method of substitution we get
X=(x+3x/2+15)/3
•x=(15x+90)/2
•2x=15x+90
•-13x=90
X= -90/13
Now. Y= 3x/2=-270/26
Therefore total
no. Of students= -270/26+(-90/13)
•no. Of students= -450/26
According to me this is an imaginary question i mean how can their be a negative person
You might be interested in
A silicon chip is 14 nanometers thick. A nanometer is equal to 0.000000001 meter. Express the thickness of the chip using scient
oksano4ka [1.4K]

Answer:

1.4 × 10^-8

Step-by-step explanation:

The chip is 14  nanometers

14 * .000000001

.000000014

Move the decimal 8 places to the right, because we need 1 number in front of the decimal for scientific notation.  The exponent will be -8 because  we moved it 8 places to the right

1.4 × 10^-8

4 0
2 years ago
Read 2 more answers
Mickey built his lemonade stand out of $75,000 worth of plywood and paint. he sells a glass of lemonade for $30 and uses $1.25 o
Leviafan [203]
Break even point is where all the expense is already covered by the revenue. In this case, the expense would be the stand ($75,000) and the lemon+sugar+water ( $1.25 per glass). The revenue comes from lemonade($30/glass). Then the equation would be:

$30 * glass of lemonade= $75,000 + $1.25 * glass of lemonade
($30-$1.25) * glass of lemonade= $75,000
glass of lemonade= 2608.7 
4 0
2 years ago
Why might the triangulation method not always produce an exact point (other than any measurement errors)
Rufina [12.5K]

Answer:

The triangulation method might not always produce an exact point (other than any measurement errors) because:

The method uses different data sources, researchers, and theories or perspectives.

Step-by-step explanation:

Research Triangulation uses multiple methods, data sources, different investigators, and varied theories for the purpose of developing a more comprehensive understanding of the underlying situations.  Triangulation validates the qualitative research by obtaining information from different sources, investigators, viewpoints, or methods.

3 0
2 years ago
Grandpa ernie is shrinking! Over the past 4 years, his hight decressed by a total of 2.4cm. It decresed by the same amount each
dolphi86 [110]

Answer: 0.6 cm

Step-by-step explanation:

Given : Over the past 4 years, Grandpa Ernie's height decreased by a total of 2.4 cm.

If  the height is decreased by the same amount each year.

Then, the change in Grandpa Ernie's height each year will be =

Total decrease in height ÷ 4

= 2.4 cm  ÷  4  = 0.6 cm

Hence, the  change in Grandpa Ernie's height each year = 0.6 cm

4 0
2 years ago
Read 2 more answers
The formula for the length of the hypotenuse in a right triangle is \sqrt{a^2+b^2} a 2 +b 2 ​ square root of, a, squared, plus,
valentina_108 [34]

Answer:

Stepdf-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Matt has a block. He uses one of the flat surfaces of the block to trace a triangle. What type of solid figure is Matt's block?
    7·2 answers
  • A machine produces 374 bolts in 33 minutes. At the same rate, how many minutes would it take to produce 272 bolts?
    7·2 answers
  • Which statement is true about the graphs of the two lines y = –6 and x = ?
    11·2 answers
  • Suppose that cot θ = c and 0 < θ < π 2 . what is a formula for sin θ in terms of c?
    14·2 answers
  • The sum of three consecutive integers is 192. what are the integers
    6·2 answers
  • Harvey the wonder hamster can run 3 1/6 km in 1/4 hour. Harvey runs at a constant rate. Find his average speed in kilometers per
    15·2 answers
  • What is 51.8 rounded to the nearest one
    10·2 answers
  • This table represents a quadratic function. x y 0 -3 1 -3.75 2 -4 3 -3.75 4 -3 5 -1.75 What is the value of a in the function’s
    5·2 answers
  • Prove that a line that divides two sides of a triangle proportionally is parallel to the third side. Be sure to create and name
    7·1 answer
  • In a board game, a certain number of points is awarded to a player upon rolling a six sided die (labeled 1 to 6) according to th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!