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2 years ago

HELP ME OUT PLS!!!!! I ONLY HAVE 1 MIN LEFT TO FINISH MY WORK!!! 20 PTS

Mathematics

1 answer:

Anni [7]2 years ago

5 0

Answer:

It would be $13 as the original bill

But the correcy answer is D

Step-by-step explanation:

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There is 5000 ml water in a fish tank. THen 20% water is evaporated per week. calculate the volume of water left after 4 Weeks.

LenaWriter [7]

Answer:

The answer to your question is: V = 2048 ml

Step-by-step explanation:

Data

Volume = 5000 ml

20% is evaporated per week

Volume of water left after 4 weeks = ?

Process

1st week 5000 ml ----------------- 100 %

x ----------------- 20 %

x = (20x 5000) / 100

x = 1000 ml

After a week there are = 5000 - 1000 = 4000 ml left

2nd week 4000 ml ---------------- 100 %

x ---------------- 20%

x = 800 ml

After two weeks, there are = 4000 - 800 = 3200 ml left

third weeks 3200 ml ----------------- 100 %

x ------------------ 20%

x = 640 ml

After three weeks there are 3200 - 640 = 2560 ml left

4rd 2560 ml ----------------- 100%

x ---------------- 20%

x = 512 ml

After four weeks there are 2560 - 512 = 2048 ml left

7 0

3 years ago

Sam counted out loud by 6s . Jorge counted out loud by 8s. What are the first three numbers both Sam and Jorge said

mart [117]

6, 12, 18, 24.

8, 16, 24.

24 is your answer. Hoped I helped!

6 0

3 years ago

Read 2 more answers

25 + 14 = blank + 25

sleet_krkn [62]

Answer:

Step-by-step explanation:

25 + 14 = 14 + 25

39 = 39

6 0

3 years ago

The prefix octa-means what?

yuradex [85]

The prefix means 8.How to remember this is a octagon which has 8 sides.Therefore Octa means eight.I hope this helped.

3 0

3 years ago

Read 2 more answers

Determine if there is a proportional relationship between the two quantities

Shalnov [3]

Answer:

The table a not represent a proportional relationship between the two quantities

The table b represent a proportional relationship between the two quantities

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Verify each table

Table a

Let

A ----> the independent variable or input value

B ----> the dependent variable or output value

the value of k will be

$k=\frac{B}{A}$

For A=35, B=92 ---> $k=\frac{92}{35}=2.63$

For A=23, B=80 ---> $k=\frac{80}{23}=3.48$

the values of k are different

therefore

There is no proportional relationship between the two quantities

Table b

Let

C ----> the independent variable or input value

D ----> the dependent variable or output value

the value of k will be

$k=\frac{D}{C}$

For C=20, D=8 ---> $k=\frac{8}{20}=0.40$

For C=12.5, D=5 ---> $k=\frac{5}{12.5}=0.40$

the values of k are equal

therefore

There is a proportional relationship between the two quantities

The linear equation is equal to

$D=0.40C$

7 0

3 years ago