A student estimated the sum

7.95 + 8.11 + 78.5 + 8.05 + 79.4 + 0.815 as:

All the numbers begin with a 7 or 8, so use cluster estimation.
8 + 8 + 80 + 8 + 80 + 0.8 = 184.8

Explain why this reasoning is not accurate.

Answers

Answer 1

Answer:

i don"t know  if it right but i got 183.275

Step-by-step explanation:

i looked up the answer

Answer 2
It is incorrect because if those decimals were to be added together it would provide a different number

Related Questions

Use picture to answer question
Show work for answer

Answers

It’s “D” I’m pretty sure.
The correct answer is :D”

OK MORE OF THESE ARE HARD TO ME SINCE IM ONLY IN MIDDLE SCHOOL!!!!!!

Answers

Answer:

w=32

Step-by-step explanation:

Answer:

32

Step-by-step explanation:

x=32

8 = 32/4

this equation is true

the others are not true

44/4 = 11

20/4 = 5

40/4 = 10

can someone help with this pls? i don’t understand math at all

Answers

The third one, it's 13a so you'd divide by 13 on both sides :)
the answer would be the 3rd one you would divide 13a on both sides since 13a is the bigger number than 7a

Study the stem-and-leaf plot. How many cars get 8 miles per gallon?

Answers

Answer:

The answer is 0. The pic is blacked out but I had the question before so here you go! At least I think I did..

Step-by-step explanation:

Sorry if it is incorrect! :(

Julie ran 4 miles in 22 minutes. What is the unit rate in terms of minutes per 1 mile?

Answers

Julie runs 0.18 miles in one minute because 4 divided by 22 and you will get 0.18

Answer:

5.5 minutes

Step-by-step explanation:

4 miles = 22 minutes

1 miles = x minutes

22/4=5.5

1 mile = 5.5 minutes

What is 30% of 29? I need the answer

Answers

8.7 is the answer i hope this helps

The rabbit population in a certain area is 500% of last​ year's population. There are 1,300 rabbits this year. How many were there last​ year?

Answers

There were 260 rabbits last year.

We know that last year was the original population as 100%. The population is now 5 times higher, as 100% x 5 is 500%.

To find the original rabbit population, we would then divide this years population of 1300 by 5, to get 1/5 aka 100% of the population. This number is 260

500/100=5
1300/5=260
260 rabbits hope this helps

Use mental math to find the difference.
82-37

Answers

Answer:

45

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

I made the 8 turn into a 7 and made the 2 into a 12 and subtracted 12 - 7 which give you 5 for the right side of the number, then did 7 minus 3 which is 4 for the left side giving you 45

Zachary purchased a computer for $1,600 on a payment plan. Two months after he purchased the computer, his balance was $1,370. Four months after he purchased the computer, his balance was $1,140. What is an equation that models the balance y after x months?

Answers

Answer:

Step-by-step explanation:

You are finding out each time how much is the items Zachary bought.

Then inputting a equation

$1,600 - ??? = $1,370

To find the unknown number, you must subtract the 2 original numbers.

$1,600 - $1,370 = $230

Computer costs: $230 leaving Zachary with $1,370 left.

Next, it says he purchased another computer...

$1,370 - ??? = $1,140

Again, we subtract the 2 original numbers to find the unknown.

$1,370 - $1,140 = $230 leaving Zachary with  $1,140 left.

Now we input this data into an equation...

y = -230x + 1600.

Help my cuz cause I’m busy

Answers

Answer:

A

Step-by-step explanation:

A hope this helps sorry if i’m wrong

How to solve this math? Please explain.

Answers

Answer:

Step-by-step explanation:

If x2 = 16 , then the possible values of x are +4, meaning 4 and -4.

4+-4=0, so the sum of all possible values of x are 0.

could be 8? But it can be 4+-4

Anyone here use Acellus? If so answer this question Acellus explain: ur grade and teachers

Answers

Answer:

Same I got A's

Step-by-step explanation:

Answer: 12

Step-by-step explanation:

List 5 examples of positive and negative things around us

Answers

The 10 Common Positive Emotions:

Love.Serenity.Forgiveness.Awe.Joy.Interest.Hope.Pride.

Examples of negative thoughts include: All or nothing: “If this date isn't successful, I'll be single forever.” Overgeneralizing: “I've been bad at every single job I've had.” ... Mind reading: “All my friends/co-workers/family think I'm mad

- BRAINLIEST answerer ❤️✌

Negative things around us
- people’s negative thoughts or feeling
- the air quality
- pollution
- toxics in the air
- fires

Positive things
- plants
-animals
-people
- family
- friends

what is (4)^-2? Please help I don't understand the topic and I need all the help I can get!

Answers

4^-2 = 0.0625

i typed it into my calculator and this is what i got!!
does this help at all love?
this is really easy I’m pretty sure the thing is 4 with a exponent of -2. Which just means -4 x -4 which equals 16

Use mental math to find the sum.
432 + 250

Answers

Answer:

682

Step-by-step explanation:

400+200=600

and 50+32=82

and 600+82=682

Hope this helps!

HELP

Would i times them

Answers

Answer:

yeah you would

Step-by-step explanation:

yes you would times them

HELP ME i will give brainliest to first answer

Answers

X =4 y=28 you’re welcome <3

Use mental math to find the sum.

53 + 38

Answers

91 is the answer to your question:)

What’s 1000+2000+3000+4000+5000+600+70+80+9+69+12+35,574=
The best answers get brainliest

Answers

Answer:

51414

Step-by-step explanation:

1000+2000 = 3000

3000+4000 = 7000

5000+600+70 = 5670

3000 + 5670 = 8670

8670 + 7000 = 15,670

80+9+69+12+35,574= 35744

35744 + 15,670 = 51414

Answer:

1000+2000+3000+4000+5000+600+70+80+9+69+12+35,574= 51,414

Compare the values of the two expressions using -3(-2) + 3 __3(-4)+9​

Answer:

>

Step-by-step explanation:

expression 1: -3(-2) + 3 = 9

expression 2: 3(-4) + 9 = 3

Answers

Answer:

I think its number 1

Step-by-step explanation:

3 is a factor of 9. 3 x 3 = 9

The chemistry teacher set out a 5 pound jar of salt at the beginning of the day. If each student needs 27.6 grams of salt for an experiment, how many students can perform the experiment before the jar is empty? (hint: 1lb=454grams)

Answers

Answer:

82 students

Step-by-step explanation:

In this, the first thing you should do is convert the five pounds to grams, which is 2270 grams. Now, all you need to divide 2270 by 27.6 to get the number of students because each student uses 27.6 grams and there 2270 grams being set each day. This gives you 82.2463768116 technically, but you should just round up, and that gives you 82 students. I hope this helped :D

Approximately 82 students can perform the experiment before the 5-pound jar of salt is empty.

In order to determine how many students can perform the experiment with the given jar of salt, we need to convert the jar's weight from pounds to grams, and then divide that by the amount of salt each student requires.

1. Given data: 1 pound = 454 grams (conversion factor).

2. The jar's weight is 5 pounds, so we multiply 5 by 454 to find the total grams of salt initially present in the jar:  

  5 pounds × 454 grams/pound = 2270 grams.

3. Each student needs 27.6 grams of salt for the experiment.

4. To find the number of students that can perform the experiment, we divide the total grams of salt by the grams per student:  

  Number of students = Total grams of salt / Grams per student.  

  Number of students = 2270 grams / 27.6 grams/student ≈ 82.42 students.

5. Since we can't have a fraction of a student, we round down to the nearest whole student (as we can't have a fraction of a student), yielding about 82 students.

6. However, we should also consider that after 82 students, there will be some salt left, but not enough for a complete experiment. Therefore, let's find out how much salt would be left after 82 students.

7. Salt used by 82 students = 82 students × 27.6 grams/student = 2263.2 grams.

8. Salt left in the jar = Total initial salt - Salt used by 82 students = 2270 grams - 2263.2 grams = 6.8 grams.

9. Since the remaining 6.8 grams is not sufficient for another complete experiment, we can conclude that approximately 82 students can perform the experiment before the jar is empty.

In conclusion, about 82 students can perform the experiment using the given 5-pound jar of salt.

To know more about Experiment here

https://brainly.com/question/19389742

#SPJ3

classify the equation 6(x + 2) = 5(x + 7) as having one solution, no solution, or infinitely many solutions

Answers

Answer:

Step-by-step explanation:

The equation has one solution.

6(x+2)=5(x+7)

6x+12=5x+35

6x+12-5x=35

6x-5x=35-12

x=23

Therefore, the equation has ONE solution.

there is only one solution to the equation. it is x=23

Explain why each of the following triangles has an area of 9 squared units

Answers

Answer:

Some of them which have halves count too

Step-by-step explanation:

So 2 halves together = 1

Try counting now.

A section of road covers 18.3 square feet. Each square foot will require 5.1 minutes to repair.

How many total minutes will it take to repair this section of road?

Enter your answer in the box.

Answers

Answer:I think it’s 61 minutes

Step-by-step explanation:

Answer: 93.33 min
Explanation: 18.3x5.1=93.33 min

20 POINTS please help 20 POINTS

Answers

The answer to your question is 9 5/6
7+1=8

11/12 + 11/12 = 22/12 simplified is 1 10/12 or 1 5/6

So 8+ 1 5/6 = 9 5/6

Answer: 9 5/6

A company's division registered a loss of (-$3,840) while producing 40 identical parts. What was the loss per part?

Answers

Answer:

$ -96

Step-by-step explanation:

Divide -3,840 by 40:Answer: $ -96

I hope it helps ♥️♥️♥️

Answer:

The answer might be C) -$96

Hope this helps you, have a nice day! :D

Identify the rule for the following pattern:

4, 24, 144...


multiply 6
multiply 6

subtract 6
subtract 6

divide 6
divide 6

add 6
add 6

Answers

4 multiplied by 6= 24
24 multiplied by 6=144

therefore, your answer is multiplied by 6!
good luck on the rest of your assessment!
Other person is right

Make an equation that has the numbers : -3.78 , -1.2y, and -4.2y

Answers

Answer: In solution

Step-by-step explanation:

Well, first you need to arrange the numbers in anyway, separated by operations. I just did:

-3.78 + (-1.2y + -4.2y)

We then need to come up with the other side of the equation.

For this, I added the like terms:

-3.78 + (-1.2y + -4.2y) = -3.78 -5.4y

Then, I came up with a value for y. Y = 5

Then, I multiplied -5.4 by 5, getting -27 so,

-3.78 + (-1.2y + -4.2y) = -3.78 - 27

Again, I collected like terms:

-3.78 + (-1.2y + -4.2y) = -30.78

Now, I have my equation.

———————————————————————————————

HOW TO SOLVE THE EQUATION

-3.78 + (-1.2y + -4.2y) = -30.78

1. Add 3.78 to both sides

-1.2y + -4.2y = -27

2. Collect like terms

-5.4y = -27

3. Divide both side by -5.4

y = 5

Answer:-

-3.75 + -1.2y = -4.2y

Step-by-step explanation:

the answer would then be that y= 1.26 when solved

THERE RATS HELP ME ….RATSS

Answers

Answer:

Ok, so the answer is 3.5

Step-by-step explanation:

From what I could see it says walked for 14 around her block 4 times so your answer is 3.5 because if (Let's call her Patricia) Patricia walked around her block 4 times in 14 minutes, we have to find the unit rate, therefore we have to divide 14 by 4 as shown below

[tex]14/4=3.5[/tex]

Thus your only viable solution is 3.5

Hope this Helps! Also, I would appreciate it if I could be rewarded with Brainliest, I work hard on these answers and I would enjoy it, you see my goal is to reach Genius status, as to provide many more helpful answers and help many more people. Even so, I hope that I have come of assistance to you!

Answer: 3.5

Step-by-step explanation: You can find this simply by dividing 14 by 4

:)

Alyssa says that -√13/2 is a rational number because it is written in the form a/b. Is she correct? Explain your answer.

Answers

Answer:

no

Step-by-step explanation:

no because root 13 is not operational number it is irrational because it has no roots

no, because the root of 13 is 3.605551275 which is an irrational number.
Other Questions
BAHow many degrees mustFigure A be rotatedcounterclockwise aroundthe origin in order to lineup with Figure B?A. 90B. 180C. 270D. 360 who wants me to teach you Spanish? If the net force acting on a stationary object is zero, how will the objects motion be affected? All of the following are types of government systems EXCEPT: Im having trouble with this, at first I got x=6 but it isnt right, can anyone help? Match the sense with its correct example of imagery. Just tell me which one it is because I am confused please help me Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.Online Content: Site 1How can you stay informed? Describe some ways to inform yourself about current political issues. (Site 1) please help i need this done soon!! PLEASE HELP! I NEED EXAMPLES! GIVING POINTS :)!Write 4-5 sentences about this image. i need a fantasy or adventure movie idea to make. Why do you think some things float and some things sink? Political fundraising organizations established by corporations, labor unions, groups are called____? Given g(x)=-2x-1g(x)=2x1, find g(-4)g(4) Which of the following is an element? O CuO O NaOCH4 H20 pagkakatulad ng face to face classes at distance learning Sem. 2 Midterm: Writing (part 1)Instrucciones Lee el tema que se tepresentaResponde al tema enel espacio indicado. Asegrate de usaroraciones completas.TemaEn seis a ochooraciones describe unlugar que te gustamucho en la naturaleza.Si hay montaas o no, sihay animales o no,cundo vas, etc. Red-green colorblindness is caused by a mutation in a gene on the X-chromosome. Bob (dad) has red-green colorblindness. Karen (mom) has color vision. Bob and Karen have a biological child named Taylor, who does not have red-green colorblindness. Taylor marries someone who has red-green colorblindness and they have 2 boys and 8 girls. Both boys have red-green colorblindness while all their sisters have color vision. Taylor is most likely: I dont know how to do this please help and show work Guided PracticeA line passes through the given points. Write an equation for the line in point-slope form. Then rewrite the equation in slope-intercept form.(3, 8), (2, 5)A.y+8= 13/5 ( x3 ); y= 13/5 x 1 5B.y8= 13/5 ( x+3 ); y= 13/5 x+ 1 5C.y+8= 13/5 ( x3 ); y= 13/5 x 1 5