PLS HELP FAST I WILL MARK THE FIRST BRAINLIEST




In science class, Alex estimates the volume of a sample to be 42 mL. The actual volume of the sample is 38 mL. Find the percent error of Alex’s estimate. Round your answer to the nearest tenth.
Group of answer choices

1.9%

2.1%

9.5%

10.5%
SHOW YOUR WORK PLS

Answers

Answer 1

Answer:

[tex]10.5\%[/tex]

Step-by-step explanation:

[tex]\% \: error = \frac{absolute \: error}{actual \: value} \times 100[/tex]

actual value = 38ml, measurement error = 42ml

absolute error = actual value - measurement error (where actual value > measurement error) OR measurement error - actual value (where actual value < measurement error)

(Note: absolute error is different from measurement error. Absolute error is the distance between the actual value and the measurement error, while measurement error is the error made in measurement).

Therefore, absolute error = 42 - 38 = 4

[tex]\% \: error = \frac{4}{38} \times 100[/tex]

[tex]\% \: error = 10.52[/tex]

Therefore: % error = 10.5 (to the nearest tenth)

I hope this helps...

Related Questions

Transformation Geometry freaking help, it’s due tmrr

Answers

Answer:

i can help

Step-by-step explanation:

3^4√16n^8
Simplify expression

Answers

Answer:

48n^8

brainliest pleaseeeeee

Answer:

243√2n^4

Step-by-step explanation:

I did the math

6). The circle graph shows Allen's activities during 24 hours.
Allen's Activities
Listening to music 12%
Sleeping
35%
Playing video games 3%
Practicing drums 5%
Attending
school
30%
Playing tennis 10%
Eating 5%
How much more time in hours did Allen spend listening to music than playing tennis?
F 2.88 hours
G 0.48 hour
H 2.40 hours
J 0.12 hour
best explained answer gets most brainliest!

Answers

Answer:

G 0.48 hour

music 12% - tennis 10% = 2%

2% x 24 hrs = 0.48 h

Answer:

0.48

Step-by-step explanation:

find the value of x an y​

Answers

But y is not in the question

Answer:

x=46

Step-by-step explanation:

GIVING BRAINLIEST!!!!!!!

Two numerical patterns are shown below:

Pattern A: 6, 12, 18, 24, 30
Pattern B: 12, 24, 36, 48, 60

Select the statement that describes the numerical patterns.

The rule for Pattern B is "multiply by 2."
The rule for Pattern A is "multiply by 2."
Each term in Pattern B is one half the corresponding term in Pattern A.
Each term in Pattern A is one half the corresponding term in Pattern B.

Answers

Answer:

ITS A

i took the quiz :)

Step-by-step explanation:

The two true statements are:

The rule for Pattern B is "multiply by 2."

Each term in Pattern A is one-half the corresponding term in Pattern B.

Wich statements are the correct ones?

Here we have two patterns:

Pattern A: 6, 12, 18, 24, 30Pattern B: 12, 24, 36, 48, 60

First, let's analyze the patterns. For pattern A we can see that we just add 6 to each consecutive term, so this is an arithmetic sequence.

6 + 6 = 12

12 + 6 = 18

18 + 6 = 24

And so on.

For pattern B we multiply each term by 2 to get the next one, so this is a geometric sequence.

2*12 = 24

2*24 = 48

and so on.

Then we already can see that. "The rule for Pattern B is "multiply by 2." Is true

And:

The rule for Pattern A is "multiply by 2." is false.

Finally, let's compare the terms. The first term of B is 12, and the first ter of A is 6, so we can see that the first term of B is two times the first one of A. The second term of B is 24, while the second of A is 12, so again, we can see that the second term of B is two times the second of A.

So we can see a pattern, meaning that the statement: "Each term in Pattern A is one-half the corresponding term in Pattern B."

Is true.If you want to learn more about sequences, you can read:

https://brainly.com/question/7882626

Plz help me out PLZ!!!!

Answers

Here’s your answer:

1.) 4x^3 + 12x^2 + 29x + 88 + 260x + 2/x^2 - 3x

2.) 2x^3 - 15x^2 + 45x - 133 + 407/x + 3

3.) -x^2 - 6x + 13 - 16/ x + 2

4.) 3x^3 - 16x^2 + 112x - 783 + 5479/ x + 7

5.) same thing as number 4

I hope this helps you :)

Se tienen dos libros: uno de 240 página y otro de 160 páginas. Si los 2 libros están formados por cuadernillos con el mismo número de páginas (entre 16 y 28), ¿cuántos cuadernillos tienen en total los dos libros?

Answers

Answer:

Book of 240 pages has 12 booklets in total

Book of 160 pages has 8 booklets in total.

Total booklets both the books have in total = 20

Step-by-step explanation:

Given - There are two books: one of 240 pages and the other of 160 pages. If the 2 books are made up of booklets with the same number of pages (between 16 and 28),

To find - How many booklets do the two books have in total?

Proof -

Given that, Number of pages of a booklet is between 16 and 28.

So, The number that lies between 16 and 28 will have to divide the number of pages of both the books.

(Because given that both the books are made up of booklet with the same number of pages)

By inspection, we get

The number of pages of a booklet = 20

because

240/20 = 12 and 160/20 = 8

∴ we get

1 booklet = 20 pages

i.e.

20 pages = 1 booklet

⇒1 page = [tex]\frac{1}{20}booklet[/tex]

⇒240 pages = [tex]\frac{240}{20}booklet[/tex] = 12 booklet

So, we get

The book of 240 pages has 12 booklets in it.

Now,

1 page = [tex]\frac{1}{20}booklet[/tex]

⇒160 pages = [tex]\frac{160}{20}booklet[/tex] = 8 booklet

So, we get

The book of 160 pages has 8 booklets in it.

∴ we get

Book of 240 pages has 12 booklets in total

Book of 160 pages has 8 booklets in total.

So, Total booklets both the books have = 12 + 8 = 20

Help me please . . . . . . . . . . . . . Thanks

Answers

I believe the answer is -1

Answer ASAP PLS -

Angle PQR and angle TQV are vertical angles. The measures of the two angles have a sum of 100°. Write and solve an equation to find x, the measures of angle TQV.​

Answers

TQV: 50
good luck :’)

The ordinate of every point on the x-axis is zero. True or false?

Answers

Answer:

true

Step-by-step explanation:

the first number is mostly known as 1 but actually is 0 because it is a separation between the negative and positive numbers

Look at screen shot below

----------------------------------------------------------

Answers

Answer:

1st option is the correct answer

plz help. need it done in 2 mins​

Answers

The answer should be D
Hope this helps :)
Can I have brainlyest plz

PLEASE QUICK
The dollar value v(t) of a certain car model that is t years old is given by the following exponential function.
v (c) = 20,000(0.88)
Find the initial value of the car and the value after 11 years.
Round your answers to the nearest dollar as necessary.
Initial value:
Value after 11 years:

Answers

9514 1404 393

Answer:

initial value: $20,000after 11 years: $4,902

Step-by-step explanation:

Assuming your equation is ...

  v(t) = 20,000(0.88^t)

The value for t=0 is 20,000.

The value for t=11 is 20,000(0.88^11) ≈ 4,902.

The initial value is $20,000; the value after 11 years is $4,902.

what is the awnser to (0.2 + 0.982) + 8 =

Answers

Answer:

9.182

Step-by-step explanation:

0.2 + 0.982 = 1.182

1.182 + 8 = 9.182

What is the length of X to Y
answers r

Answers

Answer:

8.6

Step-by-step explanation:

● The short and long hands of a clock are 4 cm and 6 cm long respectively. Find the sum of distance travelled by their tips in 2 days.

Class - 10th


No spam ❌

Juniors stay away ~

Step by step explanation please ​

Answers

Step-by-step explanation:

short hand radius = 4

distance travellled in 1 day revolution = 2πr= 2 x 22/7 x 4= 25.1cm (approx)

distance travellled in 2 day revolution= 25.1+ 25.1 = 50.2

long hand radius= 6

each hour 1 revolution by long hand so in 24 hr 24 revolutions and 48 he 48 revolution

distance travelled in 1 hr = 2πr= 2 x 22/7 x 6= 37.7

distance in 48hr = 37.7 x 48= 1809.6 (approx)

so sum of both= 1809.6 + 50.2 = 1859.8

Answer:

1910.12 cm

Step-by-step explanation:

2 days = 48 hrs = 2880 mins

One cycle of the short hand (4 cm) would be 12 hrs.

48/12 = 4 cycles

Circumference of a circle =  [tex]2\pi r[/tex]

r = 4 cm

2*pi*4 ≈ 25.13 cm (I only rounded to the hundredth, adjust as u need)

25.13 * 4 = 100.52 cm

One cycle of the long hand (6 cm) would be 60 mins (which is 1hr and two days would be 48hrs or 48 cycles. But let's keep this consistent).

2880/60 = 48 cycles

Circumference of a circle =  [tex]2\pi r[/tex]

r = 6 cm

2*pi*6 ≈ 37.70 cm (I only rounded to the hundredth, adjust as u need)

37.70 * 48 = 1809.6

100.52 + 1809.6 = 1910.12 cm

^^ I'm not a junior I'm a senior so lol

What percent of 315 is 63?

Answers

Answer:

20%

Step-by-step explanation:

Write the problem as a mathematical expression.

63/315

Convert to decimal

0.2

Times by 100

0.2 times 100

20%

NEED HELP ASAP!!!!!!!!!!!!!!

Answers

Answer:

its B

Step-by-step explanation:

just run all of them through the equation.

Answer:

A

Step-by-step explanation:

Write the word sentence as an inequality.

A number b is at least −3.

Answers

Answer:

b >= -3

The symbol > = represents "greater than OR equal to".

A standardized test is designed so that scores have a mean of 50 and a standard deviation of 4.
What percent of scores are between 46 and 54?

Answers

Answer:

68.3%

Step-by-step explanation:

Using the relation :

Zscore = (x - Mean) / standard deviation

For, x between 46 and 54

Zscore = ((54 - 50) / 4) - ((46 - 50) / 4)

P(Z < 4/4) - P(Z < -4/4)

P(Z < 1) - P(Z <-1)

0.84134 - 0.15866

= 0.68268

= 0.68268 * 100%

= 68.3%

Answer:

A standardized test is designed so that scores have a mean of 50 and a standard deviation of 4. What percent of scores are between 42 and 58?

Step-by-step explanation:

about 95.4%

Help this is due in 2 minutes

Answers

Answer:

a) 3000(1 + 0.02)^16

Step-by-step explanation:

Which expressions have products less than 3 3/5?
(Select all that apply)

Answers

1, 3 and 4.

1. 3,6>0,9
2. 3,6<4,725
3. 3,6>1,575
4. 3,6>0,54

Distribute and combine like terms: −5(−7 + 7n)

Answers

Answer:
35 - 35n (distribute then combine)

Use r = 2

When r + 4(2 + r) – 12 =

Answers

Answer:

6

Step-by-step explanation:

2+r=4

4x4=16

16+r=18

18-12=6

Answer:

6

Step-by-step explanation:

r + 4(2 + r) - 12 =

2 + 4(2 + 2) - 12 =

2 + 4(4) - 12 =

2 + 16 - 12 =

18 - 12 =

= 6

PLS HELP ME!!!!! Students are selling raffle tickets for a school fundraiser. They collect $24 for every 10 raffle tickets they sell. Suppose M is the amount of money the students collect for selling R raffle tickets. Write an equation that reflects the relationship between M and R.

Answers

My answer for this equation is M - R = and amount sold

Answer:  M=2.4R

Step-by-step explanation:

If 24 dollars are collected for every 10 tickets we can find the cost of each ticket like so...

24/10=2.4

so now we can set up our equation...

M=2.4R

this means we get M amount of money for R number of tickets sold at a rate of $2.40 each.

Solve the equation 2x + 9 = -15
Please and thank you!! ​

Answers

2x + 9 = -15
2x = -24
x = -12

what is the probability of a chance event is 0.05, it to happen when compared to a chance event with a probability of 0

Answers

Answer:

I can't understand

Step-by-step explanation:

I will just try to rewrite your question so someone lese can answer it.

"What is the probability of a chance event, with a probability of 0.05, to happen when compared to a chance event with a probability of 0."

or just what is the probability(how high or low are the chances) of an event with a very low chance of happening when compared to an event that can never happen.

DO THESE TWO PAGES
I gain: a decent grade on my rigged extra school
You gain: 25 points and brainliest

Answers

Answer:

19)A   20)A    21)A      22)C     23)D    24)D    25)B      26) A     27)B

28) A     29)B      30)A    31) The surface area of Tina's shoebox is 184a..

u can check the answers if u wantt !! :)

Solve for x using the diagram of circle C.
B В.
(3x+49)
(5x-7)

Answers

Answer:

googl it

Step-by-step explanation:

its on googl and it has the anwser

Which of the following is the solution (x,y) of the system of equations x-2y = 2 and -x+2y = 2

Answers

Answer:

Step-by-step explanation:

x-2y = 2

-x+2y = 2

set 1st eq. equal  to 2nd equation since they both equal 2

x -2y = -x + 2y

2x = 4y

x = 2y

1/2x = y

(x, 1/2x )    :P

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