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
Mashutka [201]
3 years ago
10

A bag contains balls numbered 1 to 20 if one is chosen at random what is the probability that it is prime

Mathematics
1 answer:
sergey [27]3 years ago
3 0

Answer: 8/20 or 40%.

Step-by-step explanation: The prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17, and 19. 8 in total, so 8/20. Divide 8 by 20 and you get 0.4 which transfers to 40%.

You might be interested in
Hey can you please help me posted picture of question
larisa [96]
(5x - 2)^2 = 15

Square root both sides:
5x - 2 = \pm\sqrt{15}

Add 2 to both sides:
5x = pm\sqrt{15} + 2

Divide both sides by 5:
x =  \dfrac{ \pm\sqrt{15} + 2}{5}

Answers:
x = \dfrac{ \sqrt{15} + 2}{5} \ or \ \dfrac{ - \sqrt{15} + 2}{5}

Answer: (B) and (E)

5 0
3 years ago
Read 2 more answers
Helpp this is my final
aivan3 [116]

Answer: 6.

Step-by-step explanation:

4^2 = 16

10 − 16 + 6 * 2

6 * 2 = 12

10 − 16 + 12

10 - 16 = -6

-6 + 12 = 6

3 0
3 years ago
Find the value of x in the triangle shown below.
Vesna [10]
There is no picture
6 0
3 years ago
Read 2 more answers
If f(x)f(x) is an exponential function where f(-1)=5f(−1)=5 and f(7)=32f(7)=32, then find the value of f(4)f(4), to the nearest
Whitepunk [10]

Using an exponential function, it is found that the value of the function when x = 4 is of f(4) = 15.95.

<h3>What is an exponential function?</h3>

It is modeled by:

y = ab^x

In which:

  • a is the initial value.
  • b is the rate of change, as a decimal.

In this problem, we have that f(-1)=5, hence:

5 = ab^{-1}

\frac{a}{b} = 5

a = 5b

We also have that f(7)=32, hence:

32 = ab^7

Since a = 5b:

5b^8 = 32

b = \sqrt[8]{\frac{32}{5}}

b = 1.2612.

a = 5b = 5 x 1.2612 = 6.306.

Hence the function is given by:

y = 6.306(1.2612)^x

Then, when x = 4, we have that:

y = 6.306(1.2612)^4 = 15.95

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

5 0
2 years ago
Can someone help me on this question? I Just need help with the 3rd question. Use the word bank below to answer. I’ll mark you b
lord [1]

Answer:

Transitive property

Step-by-step explanation:

I'm so sorry if it's wrong I took geo last year online and I still hated proofs. Transitive property is basically when x=y, y=z so x=z. since <4 and <5 are congruent and <1 and <4 are congruent, that would make <1 and <5 congruent because of the transitive property. Good luck with proofs!

3 0
2 years ago
Other questions:
  • The median salary for a chiropractor in the United States is $81,500 per year, according to the U.S. Department of Labor. A grou
    6·1 answer
  • if 4 people share three brownies so each person gets the same amount, how much brownie will each person get.
    13·2 answers
  • Which of the following is generally not true about statistical sampling as compared to nonstatistical sampling? (A) Statistical
    8·1 answer
  • 13 is atleast the difference of a number v and 1
    13·1 answer
  • What statement About the value of x is true
    6·1 answer
  • 6x+4=45 find the value of x​
    12·1 answer
  • A seven-year medical research study reported that women whose mothers took the drug DES during pregnancy were twice as likely to
    9·1 answer
  • What is the volume of the box with a height of 3/2 inches, a length of 7/2 inches, and a width of 5/2 inches?
    6·1 answer
  • Find the surface area, please
    11·2 answers
  • What would be the measure of the exterior angle for each<br> vertex of an equilateral triangle?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!