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
posledela
2 years ago
9

1) If there are 54 people in a class and the ratio of girls to total people is 2:5, how many

Mathematics
1 answer:
insens350 [35]2 years ago
3 0
From the ratio you can deduce 2:5 girls and 3:5 boys. Divide 54 by 5 and you get 10.8. 10.8*2 = 21.6 and 10.8*2= 32.4 which adds to the total 54. There cannot be a fraction of a person, you need to round the decimals. There are 22 girls and 32 boys.
You might be interested in
Find the area. The figure is not drawn to scale.
Rina8888 [55]
Answer:
area = 13.8 cm²

Explanation:
The area of the triangle can be calculated using the following rule:
area of triangle = (1/2) * base * height

In the given:
base of triangle = 6.9 cm
height of triangle = 4 cm

Substitute with the givens in the above equation to get the area as follows:
Area = (1/2) * (6.9) * (4)
Area = 13.8 cm²

Hope this helps :)
6 0
3 years ago
Which expression is equivalent to(60)^2-(12)^2?
seraphim [82]

Answer:

The answer is

{60}^{2}  -  {12}^{2}  \\  = (60 - 12)(60 + 12)

Step-by-step explanation:

I am a math teacher If you need any explanation you can communicate with me on Whats on this number +201557831028

3 0
2 years ago
Read 2 more answers
467.4 + 9.7 = Please help
avanturin [10]

Answer:

477.1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
[HELP ASAP 50 POINTS] 17, 18, 19, 20
Charra [1.4K]

17) f(x) = 16/(13-x).

In order to find domain, we need to set denominator expression equal to 0 and solve for x.

And that would be excluded value of domain.

13-x =0

Adding x on both sides, we get

13-x +x = x.

13=x.

Therefore, domain is All real numbers except 13.



18).f(x) = (x-4)(x+9)/(x^2-1).

In order to find the vertical asymptote, set denominator equal to 0 and solve for x.

x^2 -1 = 0

x^2 -1^2 = 0.

Factoring out

(x-1)(x+1) =0.

x-1=0 and x+1 =0.

x=1 and x=-1.

Therefore, Vertical asymptote would be

x=1 and x=-1

19) f(x) = (7x^2-3x-9)/(2x^2-4x+5)

We have degrees of numberator and denominator are same.

Therefore, Horizontal asymptote is the fraction of leading coefficents.

That is 7/2.


20) f(x)=(x^2+3x-2)/(x-2).

The degree of numerator is 2 and degree of denominator is 1.

2>1.

Degree of numerator >  degree of denominator .

Therefore, there would no any Horizontal asymptote.

6 0
3 years ago
bonjour quelqu'un peut m'aider Svp c'est pour un exercice de mathématiques . merci en avance . exprimez sous forme de pourcentag
lubasha [3.4K]
1sur10=10% 1sur5=20% 1sur2=50% 4sur5=80%
7 0
3 years ago
Other questions:
  • 5x+9-2x-7y<br> What is the coefficient of the y term?
    10·1 answer
  • Two walls are 26ft long by 9 9ft wide the other wall is 18ft long by 9ft wide. Each gallon of paint covers about 250sq ft how ma
    6·1 answer
  • Help please help super hard!!!
    8·2 answers
  • The parametric equations of a curve are x=e^-t*cost y=e^-t*sint show that dy/dx=tan(t-pi/4)
    10·1 answer
  • Instructions:Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
    5·2 answers
  • What is the mass of 8.2 moles of C2H6O?
    13·1 answer
  • Use the graph to find the slope (m) and y-intercept (b)
    11·1 answer
  • jada and christian are saving money. Jada starts with $400 in her savings account and adds $15 per week. Christian starts with $
    10·1 answer
  • The slope of the graph of a direct variation function is 4. What is the equation of the function?
    6·1 answer
  • I subtract 3 from a certain number, multiply the result by 5 and then add 9
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!