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
nexus9112 [7]
3 years ago
14

The summer has ended and it’s time to drain the swimming pool. 20 minutes after pulling the plug, there is still 45 000L of wate

r in the pool. The pool is empty after 70 minutes. Calculate the rate that the water is draining out of the pool. (Hint: remember this line is sloping down to the right) (3 marks) Rate=0-45000/70-20 Rate = (0 - 45000) / 70-20 Rate = -45000 / 50 Rate=-900/minute b) Calculate how much water was in the pool initially (at time 0). (2 marks)
Mathematics
1 answer:
kap26 [50]3 years ago
5 0

Answer:

there were 63,000L of water initially in the pool

Step-by-step explanation:

do 900L times the first 20 minutes to find out how much water was drained during the first 20 minutes and you get 18,000L drained

then, add 18,000L plus the rest of the 45,000L of water drained from the pool to get 63,000L of water intially in the pool

You might be interested in
Can you answer these please! I really need help! And I'm so not even joking only 16 17 18 and 19
frozen [14]
16.) 38.25= 4.25h
divide by 4.25 on both sides
       h=9
17.)214= 1/3x
divide by 1/3 on both sides
x= 642
18.)70= 2x
divide by 2 on both sides
x=35
19.)18.69= 5.25+1.68x
subtract 5.25 on both sides
13.44=1.68x
divide by 1.68 on both sides
x=8
4 0
3 years ago
What is the value of y?
Tju [1.3M]

Answer:

d. 54

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the next three terms in the sequence 625, 250, 100, 40...
pentagon [3]
Hi!

To solve this, let's divide

625/250 = 2.5

So is the pattern.. x/2.5 = x2/2.5 = x3/2.5...

We can test this theory by multiplying

100 x 2.5 = 250

Since 250 comes before 100 in the sequence then our theory is correct!

So to find the next numbers, divide:

40/2.5 = 16
16/2.5 = 6.4
6.4 = 2.56

The answer is C.

Hope this helps! :)
6 0
3 years ago
Dose anyone know how to do this
Neko [114]
The first one is < the second one is < and the last one is =
5 0
3 years ago
Read 2 more answers
Is jk the same length as kl? make sure you have mathematical proof to support your answer
lutik1710 [3]
Yes jk and kl are the same length because if you count the amount of units they reach from the first point to the last they both are 3 squared units/units how ever you want to call it.
7 0
2 years ago
Other questions:
  • A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 3.5 ft/s. (a) how rap
    15·1 answer
  • 7x+3-5x+8+4x-1 i need help with this
    5·2 answers
  • Find the area of that shape please and show work
    11·1 answer
  • Eighty percent of a number.?as a alegrabatic expression.
    11·1 answer
  • A farmer needs to enclose a section of land in the shape of a parallelogram by using one side of a barn for one side the barn in
    15·2 answers
  • #13 please help explain
    5·1 answer
  • Plz answer my question:-
    10·1 answer
  • I need help please thank you
    7·2 answers
  • Trevor began his pizza delivery route with 7/10 of a tank of gas in his car. When he made it back to the pizzeria, 2/5 of a tank
    15·1 answer
  • Solve:<br><br> a<br> no solution<br> b<br> infinitely many solutions
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!