1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Akimi4 [234]
3 years ago
11

Adding rational numbers:

Mathematics
1 answer:
Elza [17]3 years ago
6 0

Answer:

First, in standard notation, we must define our zero.

In this case, would make sense to define the zero in the surface of the water.

(below is a number line so you can see the process to think this)

Then if the whale is swimming 60ft bellow the surface of the water, then the first position of the whale is:

-60

Now the whale goes up 30ft, then the new position of the whale is:

-60ft + 30ft = -30ft.

The correct option is A:

The equation is -60 + 30 = -30. The whale is 30 feet below the water's surface.

(you wrote that the equation was equal to +30 instead of -30 in the option A, i supposed that it was a typo)

You might be interested in
11. A wave has a wavelength of 125 meters is moving at a speed of 20 m's. What is its frequency?
olga_2 [115]

Answer:

.16hertz

Step-by-step explanation:

3 0
3 years ago
I need help with this question?
tekilochka [14]

Answer:

8.5 h = 510 min

Step-by-step explanation:

An hour is equal to 60 minutes. Half an hour is 30 minutes.

We can break "8.5" into 8 hours and 0.5 of an hour (which is 30 minutes).

Knowing this, we can multiply 8 by 60 since each hour is 60 minutes. We then get 480. We still need to add the remaining 0.5 of an hour (30 minutes) so we add 480 + 30. We then get 510.

Therefore 8.5 hours = 510 minutes. Hope this helps!

5 0
3 years ago
Read 2 more answers
Is Statistics mathematics or science? Defend your answer.
ohaa [14]

Statistics is related to maths because we study, use and even consider statistic problems with reference to mathematics.

• It is mostly used to find the census, which is maths.

• It is used to find interest rates and other banking terms using statistics, which is again related to math.

• It is also used to find the average people living in a village or panchayat, which is also math.

Therefore I strongly believe that Statistics is Maths.

Thank You!

3 0
2 years ago
Classify the following triangle. Check all that apply.
victus00 [196]

I know Iscoscles and acute only

4 0
3 years ago
Stan says that the least common multiple of 6 and 8
Kazeer [188]
Then the lest multiple of 6 and 8 are 5 and 7 duh
5 0
3 years ago
Other questions:
  • Tell me the answer of these question.
    10·1 answer
  • A teacher records the test scores of several students. Find the median (middle) score. 80, 72, 76, 71, 75, 78, 72, 74, 82,70
    13·1 answer
  • Assume that you plan to use a significance level of alpha α equals =0.05 to test the claim that p1 equals = p2. Use the given sa
    5·1 answer
  • 20 POINTS! PLEASE HELP MY LAST QUESTION FOR MY EXAM
    12·2 answers
  • G(n) = 2n^2 - 4n; Find g(-9)
    12·1 answer
  • Need help with this plz help me
    11·2 answers
  • Graph the line.<br><br> y= -3x-1
    10·1 answer
  • If there are 125 persons in a club and they got 500.00 for lunch much money did they get together
    14·1 answer
  • Leo sold candy bars for a fundraiser. He spent $25 on a box of candy bars and
    11·2 answers
  • Helppp this is due in an hour!!​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!