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
azamat
3 years ago
12

a 120 page book has p lines to a page. if the number of lines were reduced by 3 on each page the number of pages would need to b

e increased by 20 to give the same amount of writing space. how many lines were there on the page originally?? pls help <3
Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Answer: 21

Explanation:

Space on book with p lines per page

= 120p

Amount of space needed to give the same space as initial

= 140(p - 3)

= 140p - 420

Hence we can form the equation:

140p - 420 = 120p

20p = 420

<u>p</u><u> </u><u>=</u><u> </u><u>2</u><u>1</u>

You might be interested in
What is the value of F in the formula F=9/5C+32 when C=30?
kherson [118]
I don't know i think is C
8 0
3 years ago
Read 2 more answers
Which of these is an example of typing an average rate of 42 words per minute
ella [17]

Answer:28 words in 3/2 of a minute

Step-by-step explanation:

5 0
3 years ago
The equation y= -5.131x^2 + 31.821x - 3.333 approximates the number of people standing in line to catch a commuter train x hours
GREYUIT [131]
The answer should be D since after 5 am to 7 am only two hours have passed so x=2, and then you plug in the x as 2 and solve it. You might get not around answer like 39.785 but when you round it, it would be 40.
4 0
3 years ago
Read 2 more answers
How many of these figures have at least one vertex?
Zolol [24]

Answer:

Two of those figures have a vertex.

Step-by-step explanation:

Hope this helped Mark BRAINLIEST!!!

7 0
3 years ago
A bacteria culture begins with 15 bacteria which double in amount at the end of every hour. How many bacteria are grown during t
elixir [45]
We use P = i•e^rt for exponential population growth, where P = end population, i = initial population, r = rate, and t = time
P = 2•i = 2•15 = 30, so 30 = 15 [e^(r•1)],
or 30/15 = 2 = e^(r)
ln 2 = ln (e^r)
.693 = r•(ln e), ln e = 1, so r = .693
Now that we have our doubling rate of .693, we can use that r and our t as the 12th hour is t=11, because there are 11 more hours at the end of that first hour
So our initial population is again 15, and P = i•e^rt
P = 15•e^(.693×11) = 15•e^(7.624)
P = 15•2046.94 = 30,704
4 0
3 years ago
Read 2 more answers
Other questions:
  • A zoo has two male lions one sixth of the lions are male lions how many lions are there at the zoo
    11·2 answers
  • Is 4/12 greater than 1/6
    8·2 answers
  • A photo studio is going to display a portrait in their lobby. The portrait is being re-produced from a photo with dimensions 6in
    7·1 answer
  • If b-a=c-b=d-c, what is d-b
    6·1 answer
  • Six friends went to a restaurant and agreed to share the bill equally. However, two people forgot their wallets so the other fou
    13·1 answer
  • The radius of a circle is 28 centimeters. Which measurement is closest to the circumference of the circle in centimeters?​
    11·1 answer
  • What is 999.765 rounding to the neareast hundred thousand
    6·1 answer
  • Gary Sanchez struck out 112 times in 350 at bats. What PERCENTAGE of his at-bats were strike outs?
    5·2 answers
  • Is q = 6 a solution to the inequality below?<br><br> 7 <br> Yes or no
    14·1 answer
  • Here's the question sorry​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!