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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:


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From the given equation
Katarina [22]

Answer:

  • <em>See attached</em>

a)

<u>The table:</u>

  • <u>x | -3 | -2 | -1 | 0 | 1  | 2 | 3</u>
  • y | -5 | -3 | -1 | 1  | 3 | 5 | 7

b)

  • The graph is pictured

c)

  • The y-intercept has coordinates of (0, 1)

5 0
3 years ago
Select the following lines that would be perpendicular to y = 3x + 1. (Select ALL correct)
max2010maxim [7]

Answer:

The line passing through points (1,4) and (4,3).

The line passing through points (1,-4) and (4,-5).

Step-by-step explanation:

Since the equation is y=3x+1

If it was perpendicular, it means the slope would be the negative reciprocal.

So the slope would be -1/3

9-8/6-3=1/3 (not negative) <u>No</u>

3-4/4-1=-1/3 <u>Yes</u>

-5+4/4-1=-1/3 <u>Yes</u>

6-3/5-4= 3/1 <u>No</u>

6 0
3 years ago
-5.47 and 5.47 on a number line is equal to |-5.47|.Explain her error.
Viefleur [7K]
The absolute value of -5.47 (which is |-5.47|) is always a positive number so the absolute value of -5.47 equals 5.47
4 0
3 years ago
Answer this please I will give brainliest
frozen [14]

40 Butterflies at Swallowtail :D

7 0
3 years ago
Read 2 more answers
Please help me on this one
devlian [24]

Answer:

option a

step-by-step explanation:

To rationalize the expresion we need to multiply and divide the expression by the conjugate of the denominator as follows

sqrt(9) / (sqrt(3) + sqrt(x)) = sqrt(9) ((sqrt(3) - sqrt(x)) / ((sqrt(3) + sqrt(x))(sqrt(3) - sqrt(x)))

3((sqrt(3) - sqrt(x)) / (3 - x)

So the result es option a:

(3sqrt(3) - 3sqrt(x)) / (3 - x)

4 0
3 years ago
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