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3 years ago

A scuba diver used the expression below to describe his position in relation to sea level.

2 answers:

7 0

A.Starting on a platform 2 feet above sea level, dive down to a location that is 18 feet below sea level, and then rise 8 feet.

Alex Ar [27]3 years ago

3 0

Answer:

a.Starting on a platform 2 feet above sea level, dive down to a location that is 18 feet below sea level, and then rise 8 feet.

Step-by-step explanation:

The first number (2) is positive and represents the height above the sea level that the scuba diver started. So, options c) and d) are incorrect.

If the (-20) represent s the position (-20) feet below the sea, as stated in option b), then, the position (+8) will represent that the scuba diver will be 8 feet above the sea level in the next position, which has no sense.

Therefore, option a) is the correct one.

You might be interested in

What are the solutions to 16x^2-12x=54? Select all the apply.

lesya692 [45]

Answer:

-3/2 or 9/4

Step-by-step explanation:

16x^2 - 12x = 54

Now, we take 54 to the left side. It leads the right side to become "0". As 54 is a positive, it will negative as we change the side.

16x^2 - 12x - 54 = 0

Dividing both the sides by 2, we get,

8x^2 - 6x - 27 = 0

Now, we use factorization method,

8x^2 + 12x - 18x - 27 = 0

or, 4x (2x + 3) - 9 (2x + 3) = 0

or, (2x + 3) (4x - 9) = 0

Now, 2x + 3 = 0; or, 4x - 9 = 0

2x = - 3; or, 4x = 9 (changing the sides)

or, x = - (3÷2); or, x = (9÷4)

Therefore, the solution set for x is either - 3/2 or 9/4

4 0

4 years ago

Over the past several months,the water level of a lake has been decreasing by 12% each week.If the highest water level before th

pickupchik [31]

Answer:

The level was 402.7ft. at the end of two weeks.

Step-by-step explanation:

First, we need to find the amount of decrease for the first week.

520 x 0.12 = 62.4

Now, we subtract the change for the first week.

520 - 62.4 = 457.6

Next, we find the change for the second week.

457.6 x 0.12 = 54.912

Then, we subtract the change for the second week.

457.6 - 54.912 = 402.688

And we are left with our final answer that is 402.688ft. or if you wish to round to the nearest tenth, then your answer would be 402.7ft.

8 0

3 years ago

Find the measure of angle A

Brut [27]

Answer:

-7

Step-by-step explanation:

The sum of all angles in a triangle will be equal to 180.
So we add x+46+x+71+77=180*
2x+194=180
2x= -14
x=-7

5 0

3 years ago

A Bird Is flying 5 m/s. How far will it travel if it flies for 3minutes

Diano4ka-milaya [45]

The bird is flying at 5m/s, so
1 sec = 5 m

It flies for 3 mins
3 mins = 3 x 6sec
3 mins = 180 sec
The bird flies for 180 seconds

1 sec = 5 m
180sec = 5 x 180 = 900m

The bird flew 900m in 3 mins (Answer C)

7 0

3 years ago

What is the value of x?<br><br> Enter your answer in the box.<br><br> x =

Schach [20]

Answer:

The answer will be like this

X =20

6 0

3 years ago