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
marysya [2.9K]
2 years ago
10

A tank weighs 5.6kg when it 1/4 filled with water.If it weighs 10.4kg when it is full ,what will be it's weight when it is empty

.​
Mathematics
2 answers:
Rzqust [24]2 years ago
7 0

Answer:

4 kg

Step-by-step explanation:

........................

ser-zykov [4K]2 years ago
4 0

Answer:

4 kg

Explanation:

Let the mass of tank be 't' and water 'w'

First equation<em> </em>:              (when it is 1/4 filled with water)

  • \sf t + \frac{1}{4} w = 5.6

Second equation :        (when it is filled fully with water)

  • \sf t  +w = 10.4
  • \sf  w = 10.4 - t

Insert second equation into first equation :

\rightarrow \sf t + \dfrac{1}{4} (10.4 - t) = 5.6

\rightarrow  \sf t - \dfrac{1}{4} t  + 2.6 = 5.6

\rightarrow  \sf \dfrac{3}{4} t  = 5.6 - 2.6

\rightarrow  \sf \dfrac{3}{4} t  = 3

\rightarrow  \sf t = 4

The tank weights 4 kg when it is empty.

You might be interested in
50 POINTS!
goldfiish [28.3K]

Answer:B

Step-by-step explanation: i got a 100

4 0
3 years ago
Read 2 more answers
What is the percent of decrease from 40 to 22?
Vaselesa [24]

Answer:

45% decrease

Step-by-step explanation:

The formula for percent of decrease/ increase is

Original - change/ original

So 40 - 22 = 18

18/40 = 0.45

Turn 0.45 to percent by moving the decimal two spaces to the right

45%

You can check by multiplying the original number by the percentage. So,

40 x 0.45 = 18

4 0
3 years ago
Find the product of 10n5 and 6n2
vodomira [7]

10 \times 10 \times 10 \times 10 \times 10 = 2000

6 \times 6 = 36

= 2036n

7 0
3 years ago
4.5÷0.5+0.1 IN COMPUTATION IN WORD
densk [106]
Nine point one inches
4 0
3 years ago
Read 2 more answers
Which step comes first -b-2&lt;8
Bingel [31]

Answer:

Step-by-step explanation:

Alright so the step that comes first is adding two to both sides.

Let me show you,

Step 1

-b-2<8  Add 2 to both sides

-b<10

Then you divide the sides by -1

-b<10

b>-10

3 0
3 years ago
Other questions:
  • Which table shows a constant rate of change? A Days 6 12 18 Earnings ($) 225 450 750 B Days 6 12 18 Earnings ($) 225 500 750 C D
    5·1 answer
  • Tan(-x)•cot(-x)<br> simply
    7·2 answers
  • Plz Help Ill give brainliest
    8·1 answer
  • Suppose you multiply a whole number greater than one by the fraction 3/5. will the product be greater than less than or equal to
    7·1 answer
  • What is the formula for finding the surface area of a rectangular prism?
    8·2 answers
  • WILL GIVE BRAINLIEST!
    8·1 answer
  • What is the simplified form of the expression?
    5·2 answers
  • Which expression represents"divide the sum of x and 2 by 4"?
    7·1 answer
  • Solve x2 - 4x = 0 by graphing.<br> Help please :)
    7·1 answer
  • At a restaurant, you order an appetizer for $5.25, a meal for $12.75, and a drink for $2.99. If the sales tax is 9%, what is the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!