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
Rzqust [24]
3 years ago
10

Water is added or drained from a tank each day. The first day, 910 of a gallon is added to the empty tank. The second day, 710 o

f a gallon is drained from the tank. The third day, 810 of a gallon is added to the tank. The fourth day, 610 of a gallon is drained from the tank. The amount of water in the tank after 15 days is given by 910+(−710)+810+(−610)+⋯+310+(−110)+210 9 10 + ( − 7 10 ) + 8 10 + ( − 6 10 ) + ⋯ + 3 10 + ( − 1 10 ) + 2 10 . How much water is in the tank after 15 days? Write your answer as a decimal. gallon(s)
Mathematics
1 answer:
dimulka [17.4K]3 years ago
8 0

Answer:

The quantity of water in the tank after 15 days is 1610.0 gallons OR 1.61 × 10³ gallons.

Step-by-step explanation:

The amount of water in the tank after 15 days is given by the series

910+(−710)+810+(−610)+⋯+310+(−110)+210

From the series, we can observe that, if water is added for a particular day then water will be drained the following day.

Also, for a day when water is to be added, the quantity to be added will be 100 gallon lesser than the quantity that was last added. Likewise, for a day when water is to be drained, the quantity to be drained will be 100 gallons lesser than the quantity that was last drained.

Hence, we can complete the series thus:

910+(−710)+810+(−610)+710(-510)+610(-410)+510(-310)+410(-210)+310+(−110)+210

To evaluate this, we  get

910-710+810-610+710-510+610-410+510-310+410-210+310-110+210

= 1610.0 gallons

Hence, the quantity of water in the tank after 15 days is 1610 gallons OR 1.61 × 10³ gallons.

You might be interested in
A flashlight is projecting a triangle onto a wall, as shown below.
zavuch27 [327]

Answer:

Hence the correct option is 3rd option. 40

Step-by-step explanation:

If two figures are similar, then the ratio of the corresponding sides is proportional.

\frac{15}{30} =\frac{20}{n} \\\\n=\frac{30 \times 20}{15} \\\\n= 40.

6 0
2 years ago
if tom has 6 apple and he gave his mom 3 apple and and she made a apple pie how many apple are left. ​
ch4aika [34]

Answer:

depends, if he has 6 then he still has 6

if he gave her 3 of his six, then ate the pies, he has 3

Step-by-step explanation:

5 0
3 years ago
Need help with 6,7,8,9,10,11,12,15
Ainat [17]

Answer:

6. 1.01 x -10^5

7. 6 x -10^14

8. 550,000

9. 60,700,000

10. 0.000204

11. 0.0004

12. 7,000,000,000,000 > 3,500,000,000

     7,000,000,000,000 (or 7 x 10^12) is greater by 2,000 times

15. 10^3 and 10^4

7 0
3 years ago
Read 2 more answers
In this equation, y-4/2=10, would i need to get the same denominator<br> y-4/2=10/2 = y-2=5?
Natasha_Volkova [10]
No actually you can just multiply both sides of the equation by 2 and get y-4=20. then add 4 to both sides to get y=24.
3 0
3 years ago
You just got a free ticket for a boat ride, and you can bring along 4 friends! Unfortunately, you have 6 friends who want to com
Sliva [168]

Answer:

Step-by-step explanation:you can take 5

5 0
3 years ago
Read 2 more answers
Other questions:
  • Nh jah hyghhhhghhhhhhhhhjyfgjkpiuf?
    13·1 answer
  • I would like to know how to solve this please.
    13·1 answer
  • Help answer my question
    12·1 answer
  • What does it mean for rows to be linearly independent?
    11·1 answer
  • Write 0.0000789 In scientific notation
    12·1 answer
  • Joaquun is thinking hard about equations and inequalitjes an comes up with this idea: Jf 45+47=t, then t=45+47. so, If 45+47&lt;
    10·1 answer
  • Solve the system of linear equations using elimination.
    14·1 answer
  • Solve only if you know the answer : 2/f * 5/8
    5·2 answers
  • Can someone help please. I’ll give brainleist.
    15·1 answer
  • What is the length of x?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!