Mathematics Middle School

Please help fast

In chemistry class, Bob recorded the volume of a liquid as 17.8 mL. The actual volume was 17.2 mL. Use the formula to find percent error of Bob's measurement to the nearest tenth of a percent.

Percent Error =
|Experimental Value − Actual Value|
Actual Value × 100

Answers

Answer 1

Answer:

The Percent Error is 6%

Experimental Value 17.8mL Actual Value 17.2mL

17.2x100=1720mL

Step-by-step explanation:

I don't know how to explain it srry :/

Answer 2
Error is 6 I did this

Related Questions

What should the following rate be divided by to convert it to a unit rate?

6 inches
________
12 hours

Answers

Answer:

Unit rate is a rate that has 1 as denominator.

Given the rate: 6 inches / 12 hours, we have to divide numerator and denominator by 12 to transform the denominator in 1, as follows:

\frac{6}{12} = \frac{6/12}{12/12} =

12

6

=

12/12

6/12

= 0.5 inches/hour

What does -2/3 > 1 indicate about the positions of -2/3 and -1 on the number line?
A) -2/3 is located to the right of -1
B) -2/3 is located to the left of -1
C) -2/3 is located on the right of 0, and -1 is located on the left of 0
D) -2/3 is located on the left of 0, and -1 is located on the right of 0

Please answer ASAP!

Answers

Answer:

A) -2/3 is located to the right of -1

Step-by-step explanation:

-2/3 is located to the right of -1 because it is a smaller number, and because of the greater than sign.

Answer: D) -2/3 is located on the left of 0, and -1 I located on the right of 0

6. The table shows the equations Ms. Valez discussed in math class today.


Explain the pattern of zeros in the product when multiplying
by powers of 10.

Answers

Answer:

One zero is always added when the power is added by +1

Step-by-step explanation:

one zero is always added when the power is added by 1

Help plz will give brainliest :D

Answers

Answer: 2001/87=220 (2001/87 = 23 then 23+87 equals 110 then 110+110 equals 220) then i think its 2001/87=23+220 then just 2001/87=23

Step-by-step explanation:

I do not know if im wrong! this was kinda confusing for me as well but i tried my hardestt

Answer:

2001/87=220 (2001/87 = 23 then 23+87

Step-by-step explanation:

Please help me i dont understand this

Answers

Answer:

y = 5x

I hope this helps!

I GIVE 70 POINTS !!!!!!!!!!

Chris bought 10.4 gallons of gasoline. There are approximately 3.8 liters in 1 gallon. Which measurement is closest to the number of liters of gasoline Chris bought?


Try and give a good explanation bc I have a test over proportions tomorrow.

Thanks!

Answers

Answer:

395.2

Step-by-step explanation:

104 x 3 .8 = 395.2

Good luck on the test!

we know there are about 3.8 liters in 1 gallon. if Chris bought 10.4 gallons, that’s 10.4 * 3.8 liters

10.4 * 3.8 = 39.52 liters

as a proportion, we can write it as
3.8/1 = x/10.4
(number of liters per number of gallons. there are 3.8 liters per gallon, but we don’t know how many liters in 10.4 gallons yet, thus the x)

then you cross multiply (multiply one sides denominator to with the other sides numerator twice and set them equal)to get
1x = 3.8*10.4

simplify
x = 39.52 liters

hope this helped!

Which of the following is 7/18 closest to?
1/2
0
1

Answers

1/2 I think is the answer

Answer:

1/2

Step-by-step explanation:

Using the recipe from earlier, how much fruit punch can you make if you have 50 cups of cranberry juice, 40 cups of apple juice, and 30 cups of grape juice?

Answers

Answer:

The answer is 42.

Step-by-step explanation:

You're welcome.

Answer: 42
I hope this works it might not but at least u know

So I was doing a hooda math escape game, and forgot how to do these. Can you help me?

Answers

to find the radius you divide the circumference by 2pi

area is pi times radius to the 2nd power

What is the unit cost for Brand A that cost $3.84 for 16 oz?
$0.25/oz
$0.24/oz
$0.33/oz

Answers

Answer: $0.24

All you do is divide $3.84 by 16
I used a calculator for the math equation but that’s all you do
The answer is 24 Because I divided by 3.84 you divide 16 and you’ll get 24

help i need this one question asap

Answers

Answer:

516$

Step-by-step explanation:

6%=0.6

0.6*860=

??

hope this helps

let me know

:)

$51.60 is your tax, so the total would be $911.60

A integer can be represented by the equation x+x+2+x+4=66-x . What is the value of x?

Answers

answer would be x=15

So I was doing a hooda math escape game, and forgot how to do these. Can you help me?

Answers

Pi * r ^ 2 that’s house help you out with what you need hunn
Bruh I can’t see anything it’s so blurry :/

Hard math problem simplify the problem .

Answers

The answer is D or 15 (it’s the same thing but whatever)

2. y= -3x+8 and 6x+2y= -10 pls help!! slove as (x,y)

Answers

No solution. If you rearrange things a bit, you have

6x-2y=10

3x-y=2

Double the 2nd equation and you have

6x-2y=4

There's no way 6x-2y can be both 10 and 4.

6)6&/=y so then you multiply bu7

A submarine is exploring the Pacific Ocean. At 502.5 feet below sea level, the water temperature is 63 1/4 °F. The submarine dives down 115 feet deeper, and the water temperature drops by 2 1/5 °F. What were the elevation and the water temperature after the submarine dove? Assume that sea level is at 0 feet of elevation.

Write an expression to represent the submarine’s elevation after its final dive. Then simplify the expression to find its elevation.

Answers

Answer:

-502.5 - 115 = - 617.5

63 1/4 - 2 1/5 =  

63 - 2 = 61

1/4 - 1/5 = 5/20 - 4/20 = 1/20

so 63 1/4 - 2 1/5 = 61 1/20

after the sub dove, elevation level is - 617.5 and temp is 61 1/20 F

Step-by-step explanation:

The elevation is 617.5 feet deep and the temperature is [tex]61\dfrac{1}{20}[/tex] F.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The expression for the elevation is,

E = -502.5 - 115

E  = - 617.5 feet

The temperature at this elevation is calculated as:-

⇒ 63 ( 1/4 )- 2( 1/5 )

⇒ 63 - 2 = 61

⇒ 1/4 - 1/5

⇒ 5/20 - 4/20

⇒ 1/20

T = 63 (1/4) - 2 ( 1/5 )

T = 61 ( 1/20 ) F

Therefore, the elevation is 617.5 feet deep and the temperature is [tex]61\dfrac{1}{20}[/tex] F.

To know more about Expression follow

https://brainly.com/question/723406

#SPJ2

Please help me I will give out extra points and the brain thing. image below

What is the equation of this line?


y=3x−2


y=1/2x−3


y=2x−3


y=1/3x−2

Answers

Y=3x-2 that’s the answer
Answer: y=3x-2

So to find the y-intercept, you look to see where the point is located when it crosses the y-axis. In this case, it crosses at (0, -2).

To find the slope, you do rise/run. Pick one point to start with. Count upwards, then over. You could also use slope formula if you know two points on the graph: slope= (y2-y1) / (x2-x1)

can somebody help me with this

Answers

Answer:

Yes, every input would have exactly one output.

Step-by-step explanation:

You don't even have to solve it, you can look at the x-values and see if there is two of the same number. If there were two of the same number that would mean it is not linear.

Hope that helps and have a great day!

Answer:

Yes

Step-by-step explanation:

y=1.5(6)-2

y=7

y=1.5(3)-2

y=2.5

The scale from a playground is 5 ft to 1 cm. The scale from the same playground to a second drawing is 8 ft to 1 cm. What are the side lengths of the playground in the second scale drawing? Show your work.

Answers

5a/8

The scale from a playground is 5 ft to 1 cm. The scale from the same playground to a second drawing is 8 ft to 1 cm.  the side lengths of the playground in the second scale drawing are

What is geometry?

The branch of mathematics which deals with measurements of shapes.

Length 'a' cm and width 'b' cm are the parameters of a playground.The scale from a playground is 5 ft to 1 cm so,

acm/ l ft=1cm/ 5ft

Lft= 5a ft

The scale from the same playground to a second drawing is 8 ft to 1 cm is,

bcm/ w ft=1cm/ 8ft

Another =5a/8

To learn more about Geometry click here: https://brainly.com/question/22432609

#SPJ2

Monica sells ice cream bars at the beach. In addition to a fixed salary, she earns a commission for each ice cream bar she sells. The table shows Monica's total earnings, y, from selling x bars of ice cream:

Ice Cream Sales and Earnings
Number of Bars Sold (x) Total Earnings (dollars) (y)
0 35
1 38
2 41
3 44

Which equation best shows the relationship between x and y?
y = x + 35
y = 3x + 38
y = 3x + 35
y = x + 38

Answers

Y=3x+35
The starting number is 35 and I goes up 3 times the number of ice cream sales.

Hi , hello 9+5-4+2=?

Answers

Answer:

its 12

Step-by-step explanation:

12 Is the answer yw

Find the distance between each pair of points

(-5, 2) and (-5, 6)

a
4 units
b
2 units
c
6 units
d
8 units
Question 2 (1 point)
Find the distance between each pair of points

(4.5, -3.3) and (4.5, 5.5)

a
8.8 units
b
8.7 units
c
3.5 units
d
3.6 units
Question 3 (1 point)
Find the distance between each pair of points

(-1 1/2, -6 1/2) and (-2 1/2, -6 1/2)

a
1 unit
b
6 units
c
3 units
d
4 units
Question 4 (1 point)
Find the distance between each pair of points

(5, -6) and (2, -6)

a
2 units
b
9 units
c
3 units
d
4 units
Question 5 (1 point)
Find the distance between each pair of points

(-6, -4.7) and (-6, 4.1)

a
8.6 units
b
8.3 units
c
8.8 units
d
8.1 units

Answers

1. A
2.c
3. D
Those are the only ones I see

Solving Equations and Systems of Equations
Without solving the systems, explain why the following systems must have the same solution.
System (i): 4x - 5y = 13
3x+6y=11
System (ii): 8x – 10y = 26
X – 11y = 2

Answers

Answer:

Because they are equal

Step-by-step explanation:

Guy above me is in fact completely correct. I suggest taking his answer.

The graph shows the number of quarts picked and the amount of money the customer paid.

Part A
What is the constant of proportionality, and what does it mean in this situation?

Answers

Answer:

it is 0

Step-by-step explanation:

please help !!!
for 10 point
you MUST answer and explain

Answers

Answer:

Step-by-step explanation:

area = 1/2 × base × height

area = 1/2 × 6 × 15 =

45cm I hope this helps :)

The table below shows the approximate populations of the three countries.




How many people live in China, France, and Australia in total? Write your answer in scientific notation.

Answers

Answer:

A lot

Step-by-step explanation:

AND I MEAN A LOT

Answer:

In total, about 1,416,300,000 people.

Step-by-step explanation:

the scale of the picture shown is 1cm : 3 in. find the actual height of the cup

Answers

please redo this question and give us the picture!
Maybe give me the picture so I can do it

Which points are plotted correctly on their accompanying number line? Check all that apply. Point: Negative StartFraction 7 Over 8 EndFractionA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 1 mark to the right of negative 1. Point: Negative one-halfA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is half-way between 0 and 1. Point : Negative one-fourthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.

Answers

Answer:

A, B, D.

Step-by-step explanation:

Proof in picture

Determine the ending position by adding and subtracting the indicated steps from each starting position. List your answers in order.

Answers

3-4+5=4
7-6+2=3
5-2+4=7
0-5+8=3
-4-3+7=0

I think that’s how you do it? If it’s going left to right for each
4
3
7
3
0
Those are the answers in order nwn

Anyone thats gives me the right answers, I will give brainliest to!

Answers

Answer:

1: 60

2: 1,200

3:8

4:720

5:1020

6:1260

Step-by-step explanation:

If you divide 240 by 4 you should get $60 a day. If I did my math correctly the answers should be right.

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