1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helga [31]
3 years ago
12

You increase the size of a paper by 30% then you decrease it by 30% what is the size of the paper now

Mathematics
1 answer:
polet [3.4K]3 years ago
7 0
I'm assuming that this is applying to the linear dimensions. Let's say the paper is 10 inches by 10 inches

The new paper will be 13 inches by 13 inches since 
30% of 10 = 0.3*10 = 3, and we add on 3 to 10 to get 13
Another way to see it: 130% of 10 = 1.3*10 = 13

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

Now decrease the paper by 30%
30% of 13 = 0.3*13 = 3.9
13 - 3.9 = 9.1
This is the same as saying 70% of 13 = 0.7*13 = 9.1

The paper is now 9.1 inches by 9.1 inches

As you can see, the paper has not been restored to its original size (10 by 10). The reason why is because 30% of a larger number leads to a bigger decrease than expected. 
You might be interested in
Translating a sentence into a multi-step equation
Kryger [21]

Answer:7x-4= 3

Step-by-step explanation:

4 less than the product of 7 and a number is equal to 3.

The answer is 7x-4= 3 beacuse:

(a.  whenever you have something less than , the first number in the sentence (in this cacse 4) goes after the second number (in this case 7) with a subtraction sign in the middle. (imagine this equation looking like 7-4 <u>for now)</u>.Thats a little trick i use whenever i have to write "something less than something"

(b. okay so now we know it has to be 7 times somethig -4=3, but now we just need to write the "product of 7 and a number" in proper form. in other words, whenever you get somethig times a number, it is always going to be  that number with an x right next to it. so thats why i made it 7x.

(c. "equals 3" is easy because you just turn it into an "=3".

(d. Now put it together. "4 less than the product of 7 and a number is equal to 3." becomes 7x-4=3.

Hope this helps :)) Also brainliest would be appreciated, worked pretty hard on this ! :D

5 0
1 year ago
Billy was counting the number of wheels and bike seats at the playground. He saw tricycles and bicycles. He counted 79 wheels an
-BARSIC- [3]
Billy saw 5 bikes
System of equations
2x + 3y = 79
x + y = 28 
5 0
3 years ago
Read 2 more answers
Write a decimal expression that has the same value as 2.5 divided .5-1.4
Ksenya-84 [330]
<span><span>Dividing decimals by decimals - Homeschool Math</span> go to this</span>
7 0
3 years ago
1000 at 6% interest for 3 years
viktelen [127]

Answer:

Let's say that I have $1000.00 to invest for 3 years at rate of 6% compound interest.

M = 1000 (1 + 0.06)^3 = $1191.16.

My $1000.00, after 3 years, is worth $1191.16.

4 0
3 years ago
Read 2 more answers
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!
alexandr1967 [171]

Answer:

D.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Plz answer asap thanks its only 1 question
    9·2 answers
  • HELP!!!!!!!!!!!!!!!!!!!!<br><br> what is 3x4^2<br><br> EXPLAINN
    7·1 answer
  • What are the values of a and b in the equation (4x^a)^b = 256/x^8
    14·2 answers
  • Translate 3 toothpicks and the eye to make the fish swim the other way, show the translation vectors each translation.
    12·1 answer
  • Kyle plays softball. His goal is to have a batting average of .400 or greater by the end of the season. The ratio that relates t
    11·1 answer
  • Tammy is recording the percentages she earned on each quiz in her math class. Here are her results for the last quizzes. 91, 86,
    14·2 answers
  • Use to isolate the variable
    11·1 answer
  • Hey! i’ll give brainliest please help
    13·1 answer
  • Please helppppp. geometry hw !!
    10·1 answer
  • Pls hurry will mark brainliest
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!