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
olganol [36]
3 years ago
10

A fish tank contains 18 goldfish and 22 guppies. If you randomly select 2 fish, what is the probability that they are both goldf

ish?
Mathematics
2 answers:
Leya [2.2K]3 years ago
3 0
The total number of fish available in the tank is (18 + 22) = 40.  The probability for 1 goldfish to be taken out would be 18/40. Now, after drawing the first fish, the probability to get another goldfish would be 17/39. And the probability to draw 2 goldfish would be the product of both probabilities. P = (18/40)(17/39) = 51/260 So,the answer is B.
aleksley [76]3 years ago
3 0

Answer:

b

Step-by-step explanation:


You might be interested in
25% of what number is 13
Zielflug [23.3K]

Answer: 52

Step-by-step explanation:

.25 · x =13

13/.25 = 52

6 0
3 years ago
Read 2 more answers
A particular type of cell increases by 75% in number every hour. Find the number of cells present at the end of 12 hours if ther
prisoha [69]

We have been given that a particular type of cell increases by 75% in number every hour. We are asked to find the number of cells present at the end of 12 hours if there are initially 4 of these cells.

We will use exponential growth formula to solve our given problem.

y=a\cdot (1+r)^x, where,

y = Final amount,

a = Initial amount,

r = Growth rate in decimal form,

x = Time.

75\%=\frac{75}{100}=0.75

Upon substituting initial value a=4 and x=12 in above formula, we will get:

y=4\cdot (1+0.75)^{12}

y=4\cdot (1.75)^{12}

y=4\cdot 825.0050068497657776

y=3300.020027

y\approx 3300

Therefore, there will be approximately 3300 cells at the end of 12 hours.

5 0
3 years ago
Ryan bought a sofa on sale for $342. This price was 28% less than the original price.
Snezhnost [94]
The correct answer is $475
5 0
2 years ago
Bonjour , je n'arrive pas a faire ces calcules quelqu'un pourrais m'aidez Voici les calculs : 1 sur 4 - 3 sur 4 et calculer un p
Gre4nikov [31]
Bonjour! 
90% de 2300=2070
112% de 80= 100% de 80 + 12% de 80 = 89.6km/h
:)

3 0
3 years ago
4. Use the Distributive Property to Simplify: 3(5y + 9)
Darina [25.2K]
That’s the work and the answers

7 0
3 years ago
Other questions:
  • Write the nunber 0.035 as a percent<br><br> 3.5%<br> 0.35%<br> 35%<br> 0.035%
    11·2 answers
  • 4) A rectangular court is 4 feet wide. The length is twice as long as the width. What is the area of the rectangular court?
    9·1 answer
  • Rs800 for 3 year at rate of 5 percent p.a
    10·1 answer
  • WILL GIVE BRAINLIEST! Please answer both questions
    15·1 answer
  • What is the perimeter of 36?
    9·2 answers
  • What is the solution to this system of equations 3x+y=17 and x+2y=49
    13·1 answer
  • Help ASAP please!!!!!!!!!​​
    13·1 answer
  • I WILL GIVE YOU BRAINLY IF UR RIGHT
    13·2 answers
  • 69 minutes equals how many hours and minutes?
    10·1 answer
  • 3) Stella drove for 300 miles to Washington D.C. and it took her six
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!