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ycow [4]
3 years ago
8

The elevation we call sea level is actually the average level of the sea. This means that at average sea level, the elevation is

zero. In reality, the level of the sea rises and falls in what are called tides. Low tide is the point of lowest sea level in a tidal period. High tide is the point of highest sea level in a tidal period. The height above or below average sea level is called elevation. An elevation below sea level is considered a negative value, while an elevation above sea level is positive. Winston lives near the ocean. He regularly brings an altimeter to the beach to measure the elevation of the ocean's surface. You will use the data Winston gathered to complete tasks about the rising and falling of the ocean's surface. When necessary, sketch a diagram of the situation on a separate sheet of paper to assist you. On Monday at 1 p.m., when the ocean's surface was at an elevation of 2.2 feet, Winston went to a surf shop that was 8.2 feet above the ocean's surface. At 7 p.m.when the ocean's surface was at an elevation of -2.4 feet, Winston ate dinner at a restaurant whose deck was 10 feet above the ocean's surface.
Part A
What was the net change in the elevation of the ocean's surface from 1 p.m. to 7 p.m.?

Part B
How many feet apart are the two ocean elevations described in part A?

PART C
What is the elevation of the deck where Winston ate dinner?

PART D
What is the elevation of the surf shop?​
Mathematics
1 answer:
Igoryamba3 years ago
5 0

Answer:

the first one is -4.6

Step-by-step explanation:

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A grandfather is 51, while his grandson is 11. in how many years will the grandfather's age be twice the age of his grandson?
mash [69]

Answer:

29 years

Step-by-step explanation:

In 29 years the grandson will be 40 and the grandfather will be 80. 80 is twice as much as 40.

8 0
2 years ago
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It is known that 10% of the calculators shipped from a particular factory are defective. In a random sample of ten calculators,
umka2103 [35]

Answer:

0.7361

Step-by-step explanation:

In this question we have

number to be 10

Then we have a probability of 10% = 0.10

We have q = 1-p

= 1-0.10 = 0.90

Then the probability of not more than 1 being defective:

P(x=0) + p(x= 1)

(10C0 x 0.1⁰ x 0.9^10-0)+(10C1 x 0.1¹ x 0.9^10-1)

= 1 x1 x0.3487 + 10 x 0.1 x 0.3874

= 0.3487 + 0.3874

= 0.7361

This is the the required probability and this answers the question.

probability = 10 percent = 0.1

q= 1- 10percent = 90% = 0.9

n = 4

To get the required probabiltiy for this question is

P(not greater than one is defective )=P(x=0)+P(x=1)

= 4C0x(0.1)⁰x(0.9)⁴+4C1x(0.1)¹x(0.9)³

= 0.9477

The required probability is 0.9477

5 0
3 years ago
30% of the sixth grade is eleven years old. if there are 90 eleven years olds, how many total students are in the sixth grade?
Darina [25.2K]
The answer is 300 students.
.3x = 90
90 / .3 = 300
5 0
4 years ago
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URGENT PLS HELP. pls but why or why not thank you:))
Vitek1552 [10]

Answer:

No the relation is not a function

Step-by-step explanation:

A function by definition will have a unique output for every input, so there should be no repeating outputs, however, the clinic cares for 2 legged animals (birds) as well as 4 legged animals (cats and dogs). With this being said, if a clinic has 2 animals(input), the amount of legs(output) could be 8 if two dogs, or it could be 4 if two birds, or even six if a dog and bird.

If this were a function, the clinic would undeniably have different amounts of legs having two animals opposed to one animal, but this isn't true. if the clinic has 2 birds(input), there'd be 4 legs(output). but the clinic would also have 4 legs(output) if it had 1 dog(input). the output is the same for two different inputs

This shows the output is varying depending on the type of animal since the amount of legs changes, rather than the amount of animals.

Hope this helps :)

8 0
3 years ago
What percent is 25 is 12
Ray Of Light [21]

Answer: 48%

Step-by-step explanation:

I believe you meant, what percent of 25 is 12.

In that case, you would do 12/25 which equals 0.48

To convert a decimal into a percent, you would move the decimal point over 2 digits to the right. That would make 0.48 into 48%

So 48% is the answer.

Hope this helps :)

8 0
3 years ago
Read 2 more answers
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