Mathematics High School

A student has a container with a volume of 0.5 liter. He estimates the volume to be 0.4 liter. By what percent is the​ student's estimate​ off?

Answers

Answer 1

Answer:

20

Step-by-step explanation:

0.5-0.4=0.1,0.1/0.5×100= 20

Answer 2

The students's estimation is 80%.

What is a percentage?

A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.

Given that a student has a container with a volume of 0.5 liter.

He estimates the volume to be 0.4 liter.

Now to find the percentage of estimation,

estimated volume = correct volume × required percentage / 100

0.4 = 0.5 × required percentage / 100

Required percentage = 0.4 × 100 / 0.5

Required percentage = 0.4 × 100 / 0.5

Required percentage = 80%

Therefore, the students's estimation is 80%.

To learn more about the percentage;

https://brainly.com/question/24159063

#SPJ2

Related Questions

Fellow brains pls help.... Is this true or false?

Answers

Tis true my friend

Y=x anything means True

first come first serve 25 points answer whatever first will get brainlyiest

Answers

Answer:

yo

Step-by-step explanation:

yo

Answer:

thanks dude

Step-by-step explanation:

:)

A store is having a sale on office
products. Leo buys 4 notebooks that
have a regular price of $3.30 each. They
are on sale for 20% off the regular
price. How much does Leo pay for the
4 notebooks before sales tax?
A $0.66
B $2.64
C$10.56
D $13.20

Answers

Answer:

c. $10.56

Step-by-step explanation:

$3.30 x 4 = $13.20 x 0.20 (20%) = $2.64

$13.20 - $2.64 = $10.56

You start at (1, -4). You move left 6 units. Where do you end?

Answers

Answer:

You will end up at (-5, -4)

Step-by-step explanation:

you find where (1, -4) is on the graph than from that point move left 6 units.

simplify and show your work 8÷(10−9) 3 ×7+4 2

Answers

4 2? give the exact question lol

Albert wrote a total of 5 pages of his essay in 2 hours. How many hours will Albert need to complete a 12 page paper?

Answers

Answer:

Step-by-step explanation:

…

4.8 hours

Explanation: 5 / 2 is 2.5 so thats the amount of pages per hour. 12 / 2.5 is 4.8


12 cm
5 cm
what’s the hypotenuse

Answers

answer: 13 cm

explanation:
pythagorean theorem to find the hypotenuse ( which is c)
a^2 + b^2 = c^2
let’s just say a=5 and b = 12
5^2 + 12^2 = c^2
25 + 144 = c^2
169 = c^2 -> take the square root of both sides
√169 = √c^2
c = 13

OR you can memorize a few pythagorean triples and know 13 is the hypotenuse bc 5-12-13 is a pythagorean triple so 13 is the hypotenuse

Answer:13

Step-by-step explanation:

Please help ill brainlist 15

Answers

It would be A. Point k had a positive x-coordinate (and y)

Hope this helps

Have a great day/night

Answer:

point K is reflected across the y-axis to create point K'

solve for x each figure is a parallelogram

Answers

Answer:

[tex]18x + 8= (180 - 46) = 134 \\ 18x = 126 \\ \boxed{x = 7}[/tex]

7 is the right answer.

In the lunchroom there were 100 milk cartons at lunch when lunch was over 88 had been purchased

Answers

Answer:

um whats the question....

Step-by-step explanation:

there was 12 left? 88% of the milk cartons were purchased? idek what ur looking for in an answer

Answer:

well if ur talking about 100-88 it's 12... but u didn't ask for a specific question so


The perimeter of a regular decagon is 267m.
State the length of one of its sides??

Answers

Answer: 26.7m

Step-by-step explanation:

Since a decagon has 10 sides, you'll have to divide 267m by 10.

267÷10= 26.7

One side of the decagon is 26.7m

My wife however did bake cookies this year 40% of the cookies she baked chocolate chip if she baked 36 chocolate chip cookies how many total cookies does she bake

Answers

Can you further explain this question?

Answer:

The total number of cookies is 90

Step-by-step explanation:

As, they said 40% of the total number of cookies is 36, we will take the total as "x"

= 40% of x = 36

40/100 X x = 36

40x = 36 x 100

40x = 3600

x = 3600/40

x = 90

So total cookies she baked = 90

Let's check!

So 40% of 90 need to be 36

So,

40/100 x 90 = 3600/100

= 36

So therefore, total number of cookies = 90

Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.

Answers

Answer:

360

Step-by-step explanation:

hope this helps.

Of the 80 girls in Joy's class, 24 have blond hair. What percent of girls in Joy's class have blond hair?

Answers

Answer:

30%

Step-by-step explanation:

Answer:

15%

Step-by-step explanation:

To determine the percentage of the girls with blonde hair...it means we will have to use this formula

Number of girls with blonde hair/total numbers of girls ×100

Number of girls with blonde hair is 12

Total number of girls is 80

Therefore,12/80 ×100

1200/80

120/8

15

Therefore the percentage of the girls with blonde hair is 15%

someone pls help asap this is due tmrw !!

x - 3y = -12
2x + 3y = 3

Answers

Answer:

Step-by-step explanation:

to solve this system of equations we will add them

x-3y=-12

2x+3y=3 now +3y-3y=0

3x=-12+3

3x=-9

x=-3

plug in the first equation

-3-3y=-12

-3y=-12+3

-3y=-9

y=3

(-10,-7) (-8,1) find the distance between the two points show work.

Answers

Answer:

8.25

Step-by-step explanation:

(-10,-7) (-8,1) find the distance between the two points show work.

The formula for calculating the distance between the two points is expresses as;

D = √(x2-x1)²+(y2-y1)²

D = √(-8+10)²+(1+7)²

D = √(2)²+8²

D = √4+64

D = √68

D = 8.25

Hence the distance between the two points is 8.25

help me please please.

Answers

9514 1404 393

Answer:

 $6.56

Step-by-step explanation:

The value is found by multiplying:

  32% of $20.51 = 0.32 × $20.51 = $6.5632 ≈ $6.56

PLEASE HELP!!! URGENT!!!
Marcus states that the polynomial expression 3x3 – 4x2y + y3 + 2 is in standard form. Ariel states that it should be y3 – 4x2y + 3x3 +2. Explain which student is correct and why.

Answers

Answer:

They are both correct because there is more than one way to write a multivariable polynomial in standard form. Marcus has the exponents on the x variable in descending order from the highest degree to the lowest degree. Ariel has the exponents on the y variable in descending order from the highest degree to the lowest degree.

Sample Response: They are both correct because there is more than one way to write a multivariable polynomial in standard form. Marcus has the exponents on the x variable in descending order from the highest degree to the lowest degree. Ariel has the exponents on the y variable in descending order from the highest degree to the lowest degree.

A motorboat travels 172 km in 3 hours going upstream and 372 in 4 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?

Answers

Answer:

The rate of the boat is 75.17 km/h and the rate of the stream is 17.83 km/h

Step-by-step explanation:

System of Equations

Let's call:

B = speed (rate) of the boat in still water

S = speed (rate) of the stream

The boat travels 172 km in 3 hours when going upstream, that is when the speed of the stream subtracts its own speed. The speed is the distance divided by the time, thus:

[tex]\displaystyle B-S=\frac{172}{3}[/tex]

Multiplying by 3:

3B - 3S = 172        [1]

The boat travels 372 km in 4 hours downstream when the speed of the current adds to its own:

[tex]\displaystyle B+S=\frac{372}{4}=93[/tex]

B + S = 93

Solving for B:

B = 93 - S       [2]

Substituting in [1]

3(93 - S) - 3S = 172

Operating:

279 - 3S - 3S = 172

279 - 6S = 172

Subtracting 279:

- 6S = 172 - 279

- 6S = -107

Multiplying by -1 and solving for S:

[tex]S = \frac{107}{6}\approx 17.83\ km/h[/tex]

From [2]:

[tex]B = 93 - \frac{107}{6}[/tex]

[tex]B=\frac{451}{6}\approx 75.17\ km/h[/tex]

A hot air ballon went from an elevation of 6,669 feet to an elevation of 3,402 in 54 minutes. What was its rate of descent?

Answers

Answer:

elevation refers to the height of the balloon. Descent refers to moving down, and rate of descent refers to how quickly the balloon moved down.

  In this case, we have a descent of 2,125 feet (initial height of 5,439 - ending height of 3,314). Since it took 34 minutes for the balloon to descend this distance, we divide the descent by the time (2,125/34). This gives us a rate of 62.5 feet per minute.

  That means that the balloon traveled downward 62.5 feet every minute. That's a fast moving balloon!

Step-by-step explanation:

hopefully this helps

solve for w. 7w=-14

please help me with this one plz

Answers

Answer: w = -2

Step-by-step explanation:

7w = -14

Divide both sides by 7

w = -2

That was brief but hope it helps!

Answer:

W = -2

Step-by-step explanation:

7W÷7      -14÷7

W= -2

What is the final amount if 784 is decreased by 1% followed by a 4% increase?
Give your answer rounded to 2 D

Answers

Answer:

807.21

Step-by-step explanation:

for the 1 % decrease

1/100 × 784 = 7.84

784 - 7.84 = 776.16

then 4% increase

4/100 × 776.16 = 31.0464

776.16 + 31.0464= 807.2064

in 2 Decimal places

807.21

Answer:890

Step-by-step explanation:

HURRY PLEASE!!!!!!!!!!!!! I AM GIVING BRAINLISTS (when you answer do 4/5 + 1/3 = ???. Thank you)




WHAT IS 4/5 + 1/3

WHAT IS 1/2 + 2/5

WHAT IS 3/4 + 7/10

WHAT IS 5/6 + 3/5

WHAT IS 1/5 + 1/4

WHAT IS 1/4 + 5/9

WHAT IS 2/3 + 7/8

Answers

Answer:

Step-by-step explanation:

4/5 + 1/3 = 17/15 decimal form: 1.13 mixed number form: 1 2/5

1/2 + 2/5 = 9/10 decimal form: 0.9

3/4 + 7/10 = 29/20 decimal from: 1.45 mixed number form: 1 9/20

5/6 + 3/5 = 43/30 decimal form: 43/30 decimal form: 1.43 mixed number form: 1 13/30

1/5 + 1/4 = 9/20 decimal form: 0.45

1/4 + 5/9  = 29/36 decimal form: 0.805

2/3 + 7/8 = 37/24 decimal form: 1.5416 mixed number form: 1 13/24

Mark me as brainliest please

Suppose you have 4 purple marbles, 3 green marbles, and 5 red marbles.
If 4 marbles are selected at random, what is the probability you will get exactly 1 purple?
*Note, write your answer as the most reduced fraction possible.
For example 1/3 NOT 6/18.

Answers

Answer:

3/4

Step-by-step explanation:

Put the following numbers in order from least to greatest. 9.201, 9.210, 9.012, 9.0

Answers

Answer:

9.0, 9.012, 9.201, 9.210

Step-by-step explanation:

9.0 has no decimal numbers, so it goes at the beginning, 9.012 is the next greatest, then 9.201, and finally, 9.21. Also, a zero at the end of a decimal number adds nothing.

9.0 , 9.012 , 9.201 , and greatest is 9.210 hope this helps

what is the chemical formula of water.​

Answers

Answer:

Guess its H2

Step-by-step explanation:

prove me wrong

Answer: H2O is the answer

Drag each tile to the correct box.
Each of these equations holds true for one value of x from the set {5, 12, 15, 18). Arrange the equations in increasing order of the x-values that
make them true.
6x - 15 = 75
2(2x - 1) = 46
X + (x - 10) = 26
5x - 3x = 10
Reset
Next

Answers

Step-by-step explanation:

6x - 15 = 75, 6x = 90, x = 15.

2(2x - 1) = 46, 2x - 1 = 23, x = 12.

x + (x - 10) = 26, 2x = 36, x = 18.

5x - 3x = 10, 2x = 10, x = 5.

Hence the equations

in increasing order of x-values are:

5x - 3x = 10,

2(2x - 1) = 46,

6x - 15 = 75, and

x + (x - 10) = 26.

Answer:

5x - 3x = 10

2(2x - 1) = 46

6x - 15 = 75

x+(x - 10) = 26

Evaluate the function:

f(x)=x2−x, find f(−10)

Answers

= (-10)^2 - -10
= 100 + 10
= 110

I WILL GIVE YOU BRAINLY PLSS


Which of the following is in the solution set (would appear in the shaded region of
the graph) for the inequality + 7 > 9?
A. 6
B. -6
C. -4
D. 2


SHOW YOUR WORK PLSS

Answers

Answer:

the answer Is D.2

Step-by-step explanation:

9 is greater than 7 by 2

So I took that in a test and I think the answer would be A

Write an equation and solve. Round to the nearest hundredth where necessary.

What is 25% of 96?


A.) n • 0.25 = 96; 384

B.) n = 0.25 • 96; 24

C.) n = 25 • 0.96; 24

D.) n = 25 • 96; 2400

Answers

Answer:

see explanation

Step-by-step explanation:

I think its c n=25. 0.96; 24

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