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Varvara68 [4.7K]
3 years ago
5

Someone please help with the questions on this picture!! URGENT!!!

Mathematics
1 answer:
tia_tia [17]3 years ago
5 0

Answer:

A) Independent

B) Dependent

Step-by-step explanation:

A) If we take a marble out and put the marble back, it means we have restored the sample to what it was initially and thus it doesn't affect probability of making another selection.

Thus, this is an independent event.

B) A card is taken from a deck of cards without replacement and set aside. Then after that another card is taken from the first sample, this means that the first sample size has now reduced and thus the first card taken affects the probability of the second card to be picked. Thus, this is a dependent event.

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Pls help I'm confused on what to do. View the picture to see my question, thank you!​
slamgirl [31]
The answer will be number 2
7 0
3 years ago
Mr Floyd is laying grass squares in his backyard. He will cover the entire yard except for the vegetable garden. How many square
Alenkasestr [34]

Here we can first find the area of yard and then subtract the area of vegetable garden to get the required area.

The formula to find area is given by:

A = l* w

Now we find area of yard:

length is 25 ft and width is 15 ft.

A = 25 * 15

Area of yard = 375 ft²

Area of vegetable garden:

length = 8ft and width =8ft

So the vegetable garden is a square.

Area = 8*8

Area of vegetable garden =64 ft²

Area of backyard to be laid with grass = Area of yard-Area of vegetable garden

Area required = 375 -64 = 311 ft²

Answer : The area of backyard in which grass is to be laid is 311 square feet.

3 0
3 years ago
Read 2 more answers
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal prob
Usimov [2.4K]

Answer:

UNTUU HULLUM

Overfishing occurs when more fish are removed from an ecosystem than can be maintained by the population,

Overfishing can lead to significant population declines in economically important species. The passage describes

additional impacts of overfishing on populations.

pressure affects

salmon fishery of

and 1970s, pink

n this fishery were

ihile allowing

nd 1974, the

inland spawning

approximately

to spawn at the

Isted that fishing

lower growth rates

According to the passage, which mechanism explains the observed changes in fish size over time?

A. Smaller fish produce fewer eggs than larger fish do, so they contribute fewer offspring to the next

generation.

B. Fish that are small enough to escape fishing nets are more likely to survive than larger fish.

C. Scientists found that Atlantic silversides exhibited changes in feeding and foraging rates after four

generations of selection,

D. The average size of pink salmon returning to spawn decreased from 6.0 pounds to approximately 4.5

pounds.

4 0
3 years ago
Can someone please check my answers
nekit [7.7K]

They are both correct

5 0
3 years ago
How do I solve this? Step by step
shutvik [7]

Answer:

24.

Step-by-step explanation:

Substitute each instance of x with a 3.

That leaves us with 3^2 + 3x - 5 + 3^2 - 3x + 11.

Combine like terms.

2(3^2) + 6.

Simplify.

2(9) + 6

18 + 6

24.

8 0
3 years ago
Read 2 more answers
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