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poizon [28]
3 years ago
12

The number of ducks swimming In a lake decreased by 1/4 between last year and this year. last year there were 60 ducks in the la

ke. What is the population this year? If you get stuck consider drawing a diagram.​
Mathematics
1 answer:
blagie [28]3 years ago
4 0

Answer:

Given: Population of ducks in lake, last year is 60.

Also, the population of ducks this year decreased by 1/4 th over the last year.

So, the population of ducks this year is = 60*(1-1/4)

                                                          = 60*(3/4)

                                                          = 45

Therefore, the population of ducks this year is 45 ducks.

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Tasya [4]
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36 / 9 = 4

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The probability that event A occurs is 0.4, and the probability that events A and B both occur is 0.25. If the probability that
ICE Princess25 [194]

Answer:

The probability that event B will occur is 0.45

Step-by-step explanation:

Given;

probability that event A occurs, P(A) = 0.4

the probability that events A and B both occur, P(A ∩ B) = 0.25

the probability that either event A or event B occurs, P(A ∪ B) = 0.6

To determine the probability that event B will occur, we use probability addition rule;

P(A) + P(B) = P(A ∩ B) + P(A ∪ B)

0.4 + P(B) = 0.25 + 0.6

0.4 + P(B) = 0.85

P(B) = 0.85 - 0.4

P(B) = 0.45

Therefore, the probability that event B will occur is 0.45

4 0
3 years ago
What is the area of a trapozoid
user100 [1]

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8 0
3 years ago
What is the slope of this graph?
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6 0
3 years ago
HELP ASAP Keiko divided 5 cups of milk into 1/4 cup portions. How many 1/4 cup portions did Keiko have???
Anarel [89]

Answer:

20

Step-by-step explanation:

Given data

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Therefore, the number of 1/4 portions is 20

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