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wolverine [178]
3 years ago
10

A fish take contains 16 goldfish and 24 guppies. If you randomly select 2 fish, what is the probability that they are both goldf

ish
Mathematics
1 answer:
Nostrana [21]3 years ago
5 0

The probability of drawing a goldfish on the first draw is 16 / ( 16 + 24 ), or 16/40, or 2/5. Supposing that the first fish drawn is actually a goldfish, then there are 15 goldfish left among 39 fish, and the probability of drawing a goldfish on the 2nd draw is 15/39, or 5/13. The (joint) probability of drawing 2 goldfish on the 1st 2 draws, without replacement, is (5/13)(2/5) = 2/13.

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DIA [1.3K]

Answer:

B (ignore this its for 20 characters

4 0
2 years ago
Find the values of y = r(x) = ∛x for
marissa [1.9K]
\bf y=r(x)=\sqrt[3]{x}\quad x=
\begin{cases}
-2.197\\
-1.331\\
0\\
1.331\\
2.197\\
3.375\\
4.913
\end{cases}\implies y=
\begin{cases}
\sqrt[3]{-2.197}\\
\sqrt[3]{-1.331}\\
\sqrt[3]{0}\\
\sqrt[3]{1.331}\\
\sqrt[3]{2.197}\\
\sqrt[3]{3.375}\\
\sqrt[3]{4.913}
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so.. .get the pair and plot them then, all you need is your calculator to get the cubic root of the provided value.
8 0
3 years ago
Plz help me!!!
disa [49]
~kites have adjacent sides equal~

x = 3x-12

move 3x to the other side as a negative number

-2x = -12

divide both sides by -2

-12 divided by -2 is 6

so, x is equal to 6

but, we aren't done yet because the questions asks for the value of angle b

substitute the value we found into the equation for angle b

3(6)-12

36-12

24

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7 0
2 years ago
In a math class with 28 students, a test was given the same day that an assignment
Kipish [7]

Answer:

Probability that a student who passed the test did not  complete the homework = 0.07

Step-by-step explanation:

Given:

Total number of students = 28

Number of students who passed the test = 18

Number of students who completed  the assignment = 23

Number of students who passed the test and also completed the  assignment = 16

To find: probability that a student who passed the test did not  complete the homework

Solution:

Probability refers to chances of occurrence of some event.

Probability = number of favorable outcomes/total number of outcomes

Let A denotes the event that students passed the test and B denotes the event that students completed  the assignment

P(A only) = P(A)-P(A\cap B)

Here,

P(A)=\frac{18}{28}\,,\,P(A\cap B)=\frac{16}{28}

So,

P(A\,\,only)=\frac{18}{28}-\frac{16}{28}=\frac{2}{28}=\frac{1}{14}=0.07

Therefore,

probability that a student who passed the test did not  complete the homework = 0.07

7 0
2 years ago
Let ​ f(x)=x2+10x+29 ​. What is the minimum value of the function?
OlgaM077 [116]
(-5, 4)

You can get this by finding the vertex at -b/2a for x value and plugging in to find the y value. 
6 0
3 years ago
Read 2 more answers
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