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Lesechka [4]
3 years ago
13

A fish tank contains 14 goldfish 26 guppies. If you randomly select 2 fish what is the probility that they both are gold fish?

Mathematics
1 answer:
konstantin123 [22]3 years ago
8 0
Probability=(number of favorable outcomes)/(number of total outcomes)
A=select the first gold fish.
P(A)=14/40
B=select the second gold fish
P(B)=13/39

A<span>∩B=select two fish gold

P(A</span><span>∩B)=P(A)*P(B)=(14/40)*(13/39)=182/1560=91/780

Answer: C. 91/780</span>
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Which system of equations is best represented by this graph
mihalych1998 [28]

Answer:

option F

Step-by-step explanation:

The line that slopes backwards, has an x-intercept at 9 and y-intercept at 4.

The equation is given by:

\frac{x}{9}  +  \frac{y}{4}  = 1

This implies that:

4x + 9y = 36

The line that slopes forward has a y-intercept of -2 and a slope of 3

The equation is given by:

y = 3x - 2

or in standard form:

3x - y = 2

The correct choice is F

6 0
3 years ago
both the red and blue line segments stretch from the center of the circle to a point on the circle. the legth of the blue line s
stiv31 [10]

Answer:

7.5

Step-by-step explanation:

It is longer than 5, so cross 2.5 and 5 out, 10 is too big, so 7.5 is the correct answer

4 0
3 years ago
Help please will mark brainliest
-Dominant- [34]

Answer:

  • False

Step-by-step explanation:

<u>Line a</u>

  • y = 5x - 6, it has slope of 5

<u>Line b</u>

  • x + 5y = 5

<u>Rewrite in slope-intercept form to find its slope:</u>

  • 5y = -x + 5
  • y = -1/5x + 1
  • It has slope of -1/5

Lines have different slopes: 5 and -1/5, therefore are not parallel

7 0
3 years ago
Read 2 more answers
Do 6 and 7 please vote you brainiest
tiny-mole [99]

The anser for 6 is 25/92

The answer for 7 is 1 1/2

6 0
3 years ago
PLS answer quick
Stolb23 [73]

The formula to find the volume of the composite solid is: C. V = πr²h + ⅔πr³.

<h3>How to Find the Volume of a Composite Solid?</h3>

The volume of the composite solid in the image given = Volume of cylinder + volume of hemisphere.

Volume of cylinder = πr²h

Volume of hemisphere = ⅔πr³

Therefore, formula to find the volume is: C. V = πr²h + ⅔πr³.

Learn more about volume of composite solid on:

brainly.com/question/23642076

#SPJ1

7 0
2 years ago
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