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
Annette [7]
2 years ago
15

Teenagers were asked what type of book they prefer to read. There were 18 teenagers who prefer e-books and 7 teenagers who prefe

r paperback or hardcover books. Anne says 72% of the teenagers prefer to read an e-book. Is Anne correct? Explain.
Mathematics
2 answers:
horrorfan [7]2 years ago
7 0

Answer:

Yes Anne is correct!

Step-by-step explanation:

18 + 7 = 25.

18 divided by 25 will give us the percentage of how many teens prefers e-books...

18 divided by 25 is 0.72 which is the same as 72%

Hope this helps!!

zimovet [89]2 years ago
7 0
Add 18 with 7 and then divided it by the answer
You might be interested in
What pattern do you see in the powers of 4?
Over [174]
All of them are even numbers. You will not find a power of 4 that is an odd number. Also, all of the numbers have a 4 or a 6 or both. For example,
4^3= 64

4^8= <span>65536


I hope this helps:)</span>
8 0
3 years ago
Read 2 more answers
Terry added 3 and 7 he got the sum of 9 his answer is is not correct described how Terry can find the correct sum
exis [7]
O it is not correct he can find the correct sum by counting and adding 8,9,10 so the answer is ten he was one of his answer he must not of counted right
5 0
3 years ago
Read 2 more answers
Steph makes 90 % 90%90, percent of the free throws she attempts. She is going to shoot 3 33 free throws. Assume that the results
zmey [24]

Using the binomial distribution, it is found that there is a 0.027 = 2.7% probability that he makes exactly 1 of the 3 free throws.

For each free throw, there are only two possible outcomes, either he makes it, or he misses it. The results of free throws are independent from each other, hence, the binomial distribution is used to solve this question.

Binomial probability distribution

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • He makes 90% of the free throws, hence p = 0.9.
  • He is going to shoot 3 free throws, hence n = 3.

The probability that he makes exactly 1 is P(X = 1), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{3,1}.(0.9)^{1}.(0.1)^{2} = 0.027

0.027 = 2.7% probability that he makes exactly 1 of the 3 free throws.

To learn more about the binomial distribution, you can take a look at brainly.com/question/24863377

3 0
2 years ago
Please help me!!! 13 points
77julia77 [94]
1. 16% or 25%
2. True
3 0
3 years ago
Solve the following system of equations. (Hint: Use the quadratic formula.) f(x) = 2x² 3x g(x)=-3x² + 20 (0.-10) and (1, 17) (-2
jasenka [17]

The solution of the system of equation is the intersection point of the two quadratic equations, so we need to equate both equations, that is,

2x^2-3x-10=-3x^2+20

So, by moving the term -3x^3+20 to the left hand side, we have

5x^2-3x-30=0

Then, in order to solve this equation, we can apply the quadratic formula

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

In our case, a=5, b=-3 and c=-30. So we get

x=\frac{3\pm\sqrt{(-3)^2-4(5)(-30)}}{2(5)}

which gives

\begin{gathered} x=2.76779 \\ and \\ x=-2.16779 \end{gathered}

By substituting these points into one of the functions, we have

f(2.76779)=-2.982

and

f(-2.16779)=5.902

Then, by rounding these numbers to the nearest tenth, we have the following points:

\begin{gathered} (2.8,-3.0) \\ and \\ (-2.2,5.9) \end{gathered}

Therefore, the answer is the last option

4 0
1 year ago
Other questions:
  • A magician pulls 12 rabbits out of a hat.
    7·2 answers
  • Generate the first 5 terms of this sequence:
    7·1 answer
  • A tiger eats 55 pounds of meat a day if he eats 1,754 how many days is that
    14·1 answer
  • D) The surface area if Lake Superior is approximately 31,700 square miles. Express
    10·2 answers
  • 6,12,8,15,9,7 what it the interquartile range
    13·1 answer
  • A cleaning solution can be made by mixing 2 cups of bleach with 5 gallons of water. How many cups of bleach are used per gallon?
    14·2 answers
  • Put the numbers in order from least to greatest. ITEM BANK: Move to Bottom 0.00025 0.025 0.025 x 10 0.5 x 10-5 1.25 x 10-1 1.45
    12·1 answer
  • Change 7 3/8 from a mixed. number to to an improper fraction
    13·2 answers
  • At least 3 units away from negative 1 (plot point)
    8·2 answers
  • West of Checkpoint A, which is at (0,5), are two hurdles that Helena needs to jump over. Hurdle 1 is 4 units west of Checkpoint
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!