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
Darina [25.2K]
3 years ago
10

Twenty students ride on a bus. two-fifths pack there lunches. how many of the students pack their lunch

Mathematics
2 answers:
Volgvan3 years ago
8 0

Answer: The answer is 8 students.


Step-by-step explanation:  Given that there is a bus full of students in which the total number of students is 20.

Also, it is given that two-fifth of the students pack their lunches.

So, the number of students who pack their lunches is given by

n=\dfrac{2}{5}~\textup{of the total number of students}=\dfrac{2}{5}\times 20=2\times 4=8.

Thus, the number of students who pack their lunches is 8.


Travka [436]3 years ago
5 0

\frac{2}{5}  \times 20 = 8
You might be interested in
Which of the following expresses 16 + 36 by using the GCF of the two numbers?
sergij07 [2.7K]

16 + 36 = 52 so the answer would be A) 4(4 + 9) because that equals 52 as well.

6 0
3 years ago
Read 2 more answers
State the y-coordinate of the y-intercept for the function below.
marta [7]

Answer:

1

Step-by-step explanation:

y-intercept is defined as the point where the graph crosses the y-axis. The value of x coordinate at this point is zero, as along entire y-axis, the value of x coordinate is always zero. So substituting x = 0 in the function will give us the y-coordinate of the y-intercept of the given function.

f(x)=x^{3}-x^{2} -x+1

Substituting x = 0 in this function, we get:

f(0)=0^{3}-0^{2}-0+1=1

Thus, the y-coordinate of the y-intercept is 1. Therefore the y-intercept of the function in ordered pair will be: (0, 1)

3 0
3 years ago
The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h. A=(a+b)/2 h Solve for a.
yKpoI14uk [10]

Answer:

a=\frac{2A}{h}-b

Step-by-step explanation:

Hello, I think I can help you with this.

According to the information provided in the problem, the area of ​​a trapezoid is given by

A=\frac{a+b}{2} *h\\

Step 1

solve for a, it means isolate a

A=\frac{a+b}{2} *h\\divide\ both\ sides\ by\ h\\\\\frac{A}{h}= \frac{\frac{a+b}{2} *h}{h} \\\frac{A}{h}=\frac{a+b}{2}\\\\Now, multiply\ both\ sides\ by\ two\\\\ 2*\frac{A}{h}=2*\frac{a+b}{2}\\2*\frac{A}{h}=a+b\\\frac{2A}{h}=a+b\\\\subtract\ b\ for\ both\ sides\\\frac{2A}{h}-b=a+b-b\\a=\frac{2A}{h}-b

Have a good day.

5 0
3 years ago
Michael is running for president. The proportion of voters who favor Michael is 0.8. A random sample of 100 voters is taken.
Anton [14]

Answer:

Michael is running for president. The proportion of voters who favor him is 0.3. A simple random sample of 100 voters is taken.

a)

What is the expected value :: n*p = 100*0.8 = 80

standard deviation:: sqrt(n*p*q) = sqrt(80*0.2) = 16

where q is proportion of voters who do not favor Michael. (q=0.2)

and shape of the sampling distribution is binomial distribution  which is  approximately a  bell shaped.

-------------------------

what is the probability that the number of voters in the sample who will not favor Michael will be more than 16

P(X < 16.0) = P((x - 20) / 4.0) < (16.0 - 20) / 4.0) = P(Z < -1.00) = .1587        

P(X > 16.0) = 1 - 0.1587 = 0.8413

5 0
3 years ago
Need help<br> A)they are corresponding angles<br> B)right angles<br> C)not related
Andreas93 [3]
The angles 1 and 2 are right angles.

As stated in the question line l is perpendicular to line m and perpendicular lines create right angles

Hope this helps :)
7 0
4 years ago
Read 2 more answers
Other questions:
  • To copy an angle using only a compass and a straightedge, begin by marking the vertex of the new angle. Then draw a ray from the
    5·2 answers
  • Brittany's car gets 31 miles per gallon. Brittany's car used 24 gallons of gas on a round trip to see the ocean. How far away fr
    6·1 answer
  • $10. Find the value of x in the figure.
    6·1 answer
  • How many solutions does the following system of equations have?<br> 2y= 5x + 4<br> 1 = 3x + 2
    6·1 answer
  • Simplify. y 5 • y 3 ÷ y 2
    10·2 answers
  • Colton makes the claim to his classmates that less than 50% of newborn babies born this year in his state are boys. To prove thi
    12·1 answer
  • Write <img src="https://tex.z-dn.net/?f=3x%5E%7B2%7D%20-x-3%2Bx%5E%7B3%7D" id="TexFormula1" title="3x^{2} -x-3+x^{3}" alt="3x^{2
    5·1 answer
  • the side of a triangle are in the ratio of 3:8:7. if the perimeter of the triangle is 63 cm, how long is the shorter side?
    6·1 answer
  • Please help! 20 points
    11·2 answers
  • Someone help and please make sure it’s right thank you :)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!