Mathematics Middle School

Diego measured the length of a pen to be 22 cm.


The actual length of the pen is 23 cm.


What is the percent error for Diego’s measurement?


EXPLAIN AND SHOW REASONING

Answers

Answer 1

Answer:

4.5%

Step-by-step explanation:

From the question, we are informed that Diego measured the length of a pen to be 22 cm while the actual length of the pen is 23 cm.

The percentage decrease:

= (23 - 22)/22 × 100

= 1/22 × 100

= 4.5%

good luck :)

Answer 2
4.5!!! Oh and also good luck

Related Questions

I need help plz and thank you

Answers

What do you need help with?
What do u need help with

help this may be the last time

Answers

i think the first is 107 and the second is 2. i’m not sure about the last two blanks but if they’re asking if it’s equivalent or not i think it is

factor the expression: -12x - 16y

Answers

Answer:

-4(3x + 4y)

Hope I helped

Have a great day

You have to look for the common factor of -12 and -16 which is -4. So the factored expression is -4(3x+4y).

please help i give brainliest

Answers

Answer:

all FALSE except 3 and 4

Step-by-step explanation:

Hope this helps

1. True
2. True
3. False; two negative numbers multiplied equals a positive number
4. False; a negative number multiplied by a positive number equals a negative number

The following ratios are equivalent 16 girls to 12 boys and 24 girls : 18 boys
true or false

Answers

Answer:

True

Step-by-step explanation:

If you simplify the fraction 16/12 you get 4/3, and if you multiply 4/3 by 6 you get 24/18. Which is the second ratio. Hope this helps!  

Answer:

True

Step-by-step explanation:

The first ratio is 4:3. The second ratio is also 4:3.

16:12

8:6

4:3

-------

24:18

12:9

4:3

A recipe for sparkling grape juice calls for
1/2
quarts of sparkling water and 3/4
quarts of grape juice

a. How much sparkling water would you need to mix with 9 quarts of grape juice?

b. How much grape juice would you need to mix with 15/4
quarts of sparkling water?

c. How much sparkling water would you need to make 100 quarts of punch?

d. How much grape juice would you need to make 100 quarts of punch?

Answers

A) 3/4 is equal to 0.75. 1/2 is equal to 0.5. You need to find out how many parts of the grape juice you have. So you take your 9 quarts and divide it by 0.75. That equals 12. So for the 9 quarts you need, you will add 12 parts of the 3/4. Now you need to add 12 1/2s as well. So 1/2 (or 0.5) multiplied by 12 is 6. So your answer would be 6 quarts

Answer:. A.) 6 quarts

B.) 45/8 quarts

C. 40 quarts sparkling water and 60 quarts of grape juice.

Once you get the basic ratio which is the amount of sparkling water is 2/3 the amount of grape juice, you can use that to set up as n equation for the next two questions.

Step-by-step explanation:

15/4 = 2x/3

Multiply both sides by the reciprocal:

3/2(15/4 = 3/2(2x/3)

45/8 = x

That is 5 5/8 quarts when simplified.

15/4 is 3 3/4 quarts

2 parts sparkling water to 3 parts grape juice is another useful ratio. Using that, 2x + 3x= 100 we can calculate

5x = 100

x 20. 2(20)=40 and 3(20)= 60

26 POINTS PLEASE HELP TY !!

Answers

Answer:

200+12x=644

Step-by-step explanation:

37 mark me brainlist

200+12x=644 there’s your answer!

I Need Help With Graphing Linear Functions

Take a look at both screenshots and all of the graphs will be shown. There is two graphs per screenshot and the question should be on the first one I think.

Answers

the answer should be option c
first graph on first picture is correct because you do up divided by across up was 6 and across was 8 and the line is going down so it’s minus and it goes through 5 on the y axis

Chet buys a new pair of dress shoes for work. The shoes cost $90 without sales tax. If the sales tax rate is 6.5%, how much will Chet owe the store for his new shoes?

Answers

Answer

$95.85

Step-by-step explanation:

90*.065

5.85

90+5.85

95.85

A recipe calls for “18 ounces of cream cheese with 15 ounces of sugar” How many ounces of sugar are there per ounce of cream cheese? Round your answer to the nearest hundredths place.

Answers

Answer:

0.83

Step-by-step explanation:

To get the answer, you would divided 15 by 18 because 15 is the sugar and 18 is the cream cheese, and you are trying to get sugar per cream cheese.

Answer:

0.833333333 which is 0.83 rounded to the hundredths place

Step-by-step explanation:

15 divided by 18 = 0.833333333

I need help its only 1 question so plz answer respectfuly and correctly. And plz explain ur answer.

Answers

Answer:

option B cause if you add up the 3 pizzas then it will be 30% off the whole bill instead of only 10%.

Step-by-step explanation:

hope i helped :)

Answer:

It would be option B

Step-by-step explanation:

They would save more money taking 30% off of the total of three then 10% off of each one.

For example:

If each pizza cost 10$

10% would mean 1 dollar off each pizza meaning three dollars saved in total.

If we did 3 pizzas for 30% off the original price with no discount is 30$ and with the discount is 21$.

That means you would save 9$ doing the 3 for 30% off.

Hope this helps

A garden table and a bench cost $1000 combined. The cost of the garden table is three times the cost of the bench. What is the cost of the bench? first to answer correct gets brainlyes

Answers

Answer:

3000

Step-by-step explanation:

1000x3=3000

$250 I believe is the answer

last one for the class...

Answers

Hope this helps!

Sorry the writing is really bad looking its hard to write on a laptop.

The table shows all the possible sums when rolling two number cubes numbered 1-6 what is the probability that rolling two cubes results in a sum of 8.

Answers

I think it’s a 50 percent chance
5/12 if that’s an answer

triangle abc has the coordinates in the table below. Where will the location of A' be after a dilation using a scale factor of 1.25

Answers

Answer:

B i am pretty sure

Step-by-step explanation:

The location of A' be after a dilation using a scale factor of 1.25 is (-15 , -10) .

What is scale factor?

Scale factor is defined as the number or the conversion factor which is used to change the size of a figure without changing its shape. It is used to increase or decrease the size of an object.

According to the question

ΔABC has the coordinates

A(-12,-8)

B(-16,-4)

C(-4,-8)

Now,

The location of A' be after a dilation using a scale factor of 1.25

i.e

A' = (Ax* 1.25 , Ay*1.25 )

A' = (-12* 1.25 , -8*1.25 )

A' = (-15 , -10)

Hence, the location of A' be after a dilation using a scale factor of 1.25 is (-15 , -10) .

To know more about scale factor here:

https://brainly.com/question/22312172

#SPJ2

Diego has $11 and begins saving $5 each week toward buying a new phone. At the same time that Diego begins saving, Lin has $60 and begins spending $2 per week on supplies for her art class.

1. After how many weeks will they have the same amount of money?

after ____ weeks.

2. How much do they have at that time?

$ ____.

Answers

Answer:

1. It should be 7

2. They have $46

Step-by-step explanation:

1. You make a system of linear equations from this. So it would be y= 5x+11 where x is the number of weeks and y is the money. And the second linear equation is y=-2x+60. Then you substitute it. You make it 5x+11=-2x+60. Then you solve it normally and you got your answer but remember in this case they are asking for the x. So make sure to submit the x and not the y.

2. For this it is the same thing except they are asking for the y not the x.

7 weeks they will have the same amount which is $46

Evan spent 20 hours doing homework last week. This week he spent 25 hours doing homework. He says that he spent 125% more time doing homework this week. Is he correct? Show your work to justify your decision.

Answers

Answer:

25/20 =1.25 -1 =.25 x 100 =25% more time spent on his HW.

Step-by-step explanation:

Answer:

Evan spent 25 percent more time. Not 125 percent.

I used a proportion to answer this questions.

20=25

100 ?

You cross multiply: 25 times 100 is 2,500. 2,500 divided by 20 is 125.

So Evan is incorrect

If this is wrong I'm sorry

There are 11 students running a relay race that is 2 mi long. Each student runs approximately 211 mi. The course has a marker every 0.1 mi. Between which two markers does the second student finish.

Between the start and the first marker.

Between the first marker and the second marker.

Between the second marker and the third marker.

Between the third marker and the fourth marker.

Between the fourth marker and the fifth marker.

Answers

Between the first maker

the answer is ...................

A circular running track is LaTeX: \frac 1 41 4 mile long. Elena runs on this track, completing each lap in LaTeX: \frac 1 {20}1 20 of an hour.

What is Elena's running speed?

Answers

Answer:20

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

Match each unit rate to its ratio.

Answers

*3/4 gallon: 1/2 a minute is 1 1/2 gallons a minute

*1 1/2 gallons in 1/2 a minute is 3 gallons per minute

*3 gallons: 4 1/2 minute is 2/3 gallons a minute

*3 gallons: 1/3 minute is 9 gains a minute

what the other person said is correct i am to lazy to type

factor the expression: 8m - 20n

Answers

Answer: 11

Step-by-step explanation:

Answer:

this operation is simple the result will be 12n

Step-by-step explanation:

You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Which expression describes the percent of increase in the tree's height?

Which of these answers is correct?

Answers

Answer:

43-36/36*100

the bottom left one

17 minutes left to answer

Answers

9514 1404 393

Answer:

  can't be factored

Step-by-step explanation:

The two terms of 11t -23 have no common factors. Both of the coefficients are prime numbers, and the variable appears in only one of the terms. The expression ...

  cannot be factored

1.Keisha needs to make at least 28 costumers for the school play. Since she can make 4 costumers each week,Keisha plans to work on the costumes for at least 7 weeks.

Answers

Work one a day and then you will be done bc 28 x 4 is 28

Answer: the following

Step-by-step explanation:

Hi

What decimal is 1/10 of 0.008?

Answers

Pretty sure it’s 0.0008.

Answer:

0.08

Step-by-step explanation:

Help please its fifth grade math!

Answers

Answer:

40 minutes

Step-by-step explanation:

1760 yards in a mile, 3520 divided by 1760 is 2 miles. since it takes here 10 minutes for a half mile, 10*4 (2miles=4 half miles) equals 40 minutes.

I need a answer to the picture provided by me.

Answers

Answer:

the first one is -(25/2) OR -12.5

THE Second one is -(125/8) or -15.625

Answer:

these are the answers in order!

hope this helped

name the value of x that would make the relation ...

Answers

the relation is between the x- values and y-values of the ordered pairs. The set of all x-values is called the domain and the set of all y-values is called the range

Answer:

this is a function. if you consider the first value in each ordered pair to be the independent variable then theyplot

Write in standard form 3.82×10⁻³ (Ex: 300)
Please take this seriously, ty :)

Answers

Answer:

0.00382

Step-by-step explanation:

because of the -3, you will move the decimal place to the left three units

The answer is 0.00382

If the Soccer Coach for your team notices the great sale at Sherman’s Sporting Goods and decides he will purchase 30 Soccer Balls. How much will he pay including 8.875 % sales tax?

Answers

8.875% = 0.0875 • 30 = 2.6625 ≈ $2.66
$30 + $2.66 = $32.66 for the soccer balls in all.
32.66 is the correct answer
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