At noon, a tank contained 10 cm of water. After several hours, it contained 7 cm of water. What is the percent decrease of water in the tank?

Please answer with explanation.

Answers

Answer 1
The tank decreased from 10 cm to 7 cm, so the tank lost 3 cm of water.
So 30%.was lost
Answer 2

Answer:

10cm - 7cm = 3cm

this 3cm is the decrease in the depth of water, let us find the percentage decrease.

%decrease=(decrease÷original depth) × 100%

%decreas=(3cm÷10cm)×100%

therefore we get 30%


Related Questions

How many different committees can be formed from 8 teachers and 39 students if the committee consists of 2 teachers and 4 students?

Answers

Answer:

Step-by-step explanation:

8 učiteľov 39 študentov

1 výbor = 2 učitelia + 4 študenti

8 učiteľov :2=4

39 študentov :4= 9,75

Takže máme 4 výbory ...viacej to nemôže byť aj keď nám zostávajú študenti pretože je daný počet učiteľov...

Answer: 2303028

Step-by-step explanation:

How does the value of 874.12 change if the decimal point is moved two places to the left?

Answers

I would think it would be 8.7412

What is an equation of the line that passes through the points (5,-2) and ( -5,0)?
Put your answer in fully reduced form.

Answers

9514 1404 393

Answer:

  y = -1/5x -1

Step-by-step explanation:

When given 2 points, it can work well to start with the 2-point form of the equation for a line.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (0 -(-2))/(-5 -5)(x -5) +(-2)

  y = 2/(-10)(x -5) -2

  y = -1/5x -1 . . . . . eliminate parentheses and collect terms

Will mark brainliest!

Answers

Answer:

4.817+9.099+17.008=30.924

484.603-48.198=436.405

Estimation 5+9+17=31

485-48=437

Just round each decimal to the nearest whole number and add or subtract

Answer:

first blank: 30.924

second blank: 436.405

Step-by-step explanation:

We can estimate by rounding numbers and adding

find square root of 128881 by division method​

Answers

I thinks it 833/5000

-(x + 3) -2(4x -3)
guys pls

Answers

Answer:

-9x+3

Step-by-step explanation:

remove parenthesis which gives you -x-3-8x+6

collect the like terms add -x to 8x

gives you -9x+3

Help 8th grade math... it's hard lol

Answers

Answer:

y = 7

Step-by-step explanation:

The equation of the line is y = 7 because since it's a horizontal line the y value will always stay the same, and the x value will always be changing. Therefore you could draw a line straight across the y-axis at 7

What are the x and y intercepts???

Answers

Answer:

X intercept = 6  

Y intercept = -3

Step-by-step explanation:

An intercept is where the line goes through the y and x axis on the axis!

find the slope of the line passing through the given points or the given line.

Answers

Answer:

y = -1

Step-by-step explanation:

since this is a straight, horizontal line, we know that this will just be a y value line

since the line passes through the y axis at y = -1, this is the equation for the line

y = -1


What is the solution to the following inequality?
*** <5
O w>4
0 > 2
O <4
0 0 <16

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Inequalities.

so we get as,

(w+6)/2 < 5

so we get as,

w+6 < 10

=> w < 10-6

=> w < 4

so the answer is,

w < 4

PLEASE HELP!!!!!!
Matt, Steve and John sold magazines for a school fundraiser. John sold two less than Matt. Steve sold twice as many as John. Write a simplified expression representing the total amount of magazines sold

Answers

Answer:

4x - 6

Step-by-step explanation:

Matt:  x

Steve: 2(x - 2)

John:  x - 2

Total magazines sold:

 x + 2(x - 2) + (x - 2)

 x + 2x - 4 + x - 2

 4x - 6

Play made a recipe with 22 cups of liquid total 12 of which were fruit punch

Answers

Answer:

What is the question? I cannot see :(

Michael has an average daily balance on his credit card of $327.50. His credit card charges 11.99% annual interest. What will his monthly finance charge be?

Answers

Answer:

i Think its 36.03

Step-by-step explanation:

np!

What is 8x-3x-10+6 simplified

Answers

8x-3x-10+6
Take out the liked terms (x)
8x-3x=5x
We’re left with 5x then you have a negative 10 and a positive 6
And it will give you 4
So answer
5x-4 :D

I need help on all three questions (geometry)

Answers

Answer:

x = -7

m<GFD = 50°

m<CFD = 40°

Segment FD doesn't bisect <CFG because the angles aren't equal.

Step-by-step explanation:

<CFD and <GFD are complementary angles and their sum is 90°

-5x + 5 -7x + 1 = 90° add like terms

-12x + 6 = 90

-12x = 84 divide both sides by -12

x = -7

m<CFD is -5x + 5 ➡ (-5)×(-7) + 5 = 40°

m<GFD is -7x + 1 ➡ (-7)×(-7) + 1 = 50°

What is the quotient of 6 and -1/2?​

Answers

The answer would be-3
The answer would be -3

What slope would make the lines
parallel?
y = x + 6
y = [?]x+4

Answers

Answer:

1

Step-by-step explanation:

Parallel lines have the same slope and it is understood for 1 to be the number in front of the x if there isn't one so, the slope or number for the second line would also be 1.

I believe the correct answer would be 1

3.) There are 1,000 marbles in a large box. Johnny took a scoop of marbles from the box. He
counted 15 red marbles, 20 green marbles, and 5 blue marbles. If the scoop was a good
sample of the marbles in the large box, how many red marbles would you expect to find in
the large box?*
O A) 150 reds
O B) 375 reds
O C) 600 reds
OD) 800 reds

Answers

Answer: B) 375 reds

Step-by-step explanation:

Every 40 marbles 15 are red.

1000/40=25

25 x 15= 375

Reduce the fraction to the lowest term
[tex] \frac{4}{8} [/tex]

Answers

It would be 1/2 sorry if I’m wrong

Answer:

[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

To reduce the fraction to the lowest term, we divide the like term by the GCF of its numerator and denominator.

Here,

As 4 and 8 have the GCF as 4 itself. We divide both the numerator and denominator with the GCF (4).

Hence,

[tex]\frac{4}{8}\\=\frac{4}{8}/\frac{4}{4} \\=\frac{4/4}{8/4} \\=\frac{1}{2}[/tex]

Estimate the sum to 518+251

Answers

Answer:

If you need to estimate then 770?

Step-by-step explanation:

520+250=770

Order these numbers from least to greatest.
8.4051, 8.009, 8.4, 8.09

Answers

8.4051, 8.4, 8.09, 8.009.

Hope this helps. Have a nice day!!!

Answer:

8.009, 8.09, 8.4,8.4051

Step-by-step explanation

the 8.009 goes first because since it has zeros in it it would be the lowest than 8.09 is the next smallest 8.4 is the next big number because four is greater than zero and the biggest number because its has the bigger numbers in it.

Hope my explanation makes sense

Hope this is right

Good luck

can someone help me with a question i will give brainlyest

Answers

Answer:

what is the question

Keith bought n pack of pencils.Each pack has 12 pencils.Write an equation to represent the total number of pencils p that keith bought

Answers

Answer:

n÷12 pack of pencils

Step-by-step explanation:

The length of a rectangle is 3x + 4 and the width is 2x + 7.
a. Write an equation for the perimeter P of the rectangle.
b. The perimeter of the rectangle is 62 feet. What is the value of x?
c. What are the length and width of the rectangle?

Answers

Step-by-step explanation:

P = 2 (2x+7) + 2(3x +4)Now, comparing the above with 62 we get x=4Length is 16 and width is 15

A food processing plant is packaging 32oz bags of coffee beans. The tolerance is 0.25 ounces. 100 bags of coffee were weighed, and the number at each weight is shown in the table below:

Weight # of bags
31.25. 1
31.7. 3
31.8. 3
31.83. 6
31.9. 15
32. 49
32.1. 14
32.2. 5
32.24. 2
32.3. 2

If more than 1 in 10 bags is outside of the acceptable tolerance, the bagging line is paused until the problem is identified. Does the line need to be paused?

Answers

Answer: No

Step-by-step explanation:

In honors math increased by 12% in this year students-
if S represents students than an expression to represent this is 1.12S
True or false

Answers

Answer:

True I think.

Step-by-step explanation:

True, An expression to represent this is, 1.12S

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

To Calculate the percent of a number , divide the number by whole number and multiply by 100.

We have to given that;

In honors math increased by 12% in this year students.

Now, if S represents students.

Then, An expression to represent this situation is,

⇒ S + 12% of S

⇒ S + 0.12S

⇒ S (1 + 0.12)

⇒ 1.12S

Thus, The expression is true.

Learn more about the percent visit:

https://brainly.com/question/24877689

#SPJ2

a positive number is always___ than a negative number​

Answers

it's always a larger number.

Tell whether the x- and y-values in the table show a proportional or non-proportional relationship. If the relationship is proportional, tell the rule. Select one:
aProportional; x = 3/7y
bNon-proportional
cProportional; x=1/3y
dProportional; x=2/5y​

Answers

Answer:

b. Non-proportional

Step-by-step explanation:

A table of values that represents a proportional relationship will have the same ratio of every pair in the given table. That is, y/x will result in the same value all through for every given pair.

The table of values given does not show a proportional relationship, because the ratio of y to x of each given pair of values are different and unequal:

y/x = 3/1 ≠ 5/2 ≠ 7/3 ≠ 9/4

Therefore, it is non-proportional.

A number is at most 13

Answers

What do you mean by that?

Answer:

Meaning?????

Step-by-step explanation:

please help me asap​

Answers

Answer:

4 yards, thats what you get when you subtract 2 1/3 from 8 1/3

Answer:

4 yd

Step-by-step explanation:

6 1/3 - 2 1/3 is 4 yds because 1/3 - 1/3 is zero and 6 - 2 is 4

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