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
notka56 [123]
3 years ago
15

Kyra observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library did not like re

ading mystery stories, the number of students at the library who liked mystery stories was _____. (only put numeric values, no other symbols)
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
3 0
85% liked => 15% didn't like

30 = 15% of x
30 = 0.15 x => x = 30 / 0.15 = 200. This is the total number of students at the library.

Then 200 - 30 = 170 is the number of students whom did like reading mistery stories.

Answer: 170.


You might be interested in
A person who wants to get in shape goes to a local gym that advertises 31 training sessions for $1179. Find the cost of 101 trai
lesya [120]

Answer:

$3841.26

Step-by-step explanation:

The first step is to find the price of a single session. 1179/31 is about $38.03. Multiplying this by 101, you get about $3841.26. Hope this helps!

6 0
3 years ago
Read 2 more answers
743 times 295 answer please
Mamont248 [21]
The answer is 219,775
5 0
3 years ago
Read 2 more answers
ANSWER THIS PLZZZZZZ
Citrus2011 [14]
I would say it’s B because out of ten it makes the mean 1 point higher
6 0
3 years ago
Write the equation, in slope-intercept form, of a line with an undefined slope and an x-intercept of -7. Type the equation in th
quester [9]
Undefined slope

slope=rise/run
if run=0, we get an undefined slope
means that it does go left or right, only up and down
the equaiton will be x=something
x intercept is -7 so the equation is x=-7
4 0
3 years ago
You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the larg
katovenus [111]
Problema Solution

You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the largest dimensions of this enclosure that you could build?

Answer provided by our tutors

Make a drawing and denote:


x = half of the length of the enclosure


2x = the length of the enclosure


y = the width of the enclosure


P = 800 ft the perimeter


The perimeter of the two enclosures can be expressed P = 4x + 2y thus


4x + 3y = 800


Solving for y:

........

click here to see all the equation solution steps

........

y = 800/3 - 4x/3


The area of the two enclosure is A = 2xy.


Substituting y = 800/3 - 4x/3 in A = 2xy we get


A = 2x(800/3 - 4x/3)


A =1600x/3 - 8x^2/3


We need to find the x for which the parabolic function A = (- 8/3)x^2 + (1600/3)x has maximum: 


x max = -b/2a, a = (-8/3), b = 1600/3


x max = (-1600/3)/(2*(-8/3))


x max = 100 ft


y = 800/3 - 4*100/3


y = 133.33 ft


2x = 2*100


2x = 200 ft

3 0
3 years ago
Other questions:
  • Austin is using a funnel shown to fill a glass bottle with colored sand Estimate the volume of the funnel number 21 please
    5·1 answer
  • PLEASE HELP IMPORTANT MATH
    10·1 answer
  • Mark works at a shoe store for 30 hours a week and earns $8.75. During one week Mark sold $480 in shoes. If he receives a 5% com
    12·1 answer
  • Solve For X<br><br> please help, thank you :}
    7·2 answers
  • What is the product of 4/5 and 6/7
    7·1 answer
  • Pls help bro plsss pls pls
    13·2 answers
  • A painting is 15 in tall and 20 in wide. If it is reducted to a width of 4 in, then how tall will it be?
    10·1 answer
  • Solve e^x = e^2x + 5<br> A) x = -5<br> B) x = 5<br> C) x = 10<br> D) X = -2
    10·1 answer
  • Find the slope on any given line please see attached photo
    8·1 answer
  • Can someone help me answer this
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!