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
fredd [130]
2 years ago
10

in a survey of 9000 people, 4000 likes tea,4500 like coffee. among them 2500 dont like tea and coffee. find number of people who

like tea and coffee both​
Mathematics
2 answers:
Inessa05 [86]2 years ago
8 0

Answer:

500

Step-by-step explanation:

n(t)=4000

n(c)=4500

n(tea only )= 4000-x

n(coffee only )= 4500-x

n(coffee and tea )= x

note...using Venn diagram ..all together must add up to 9000

(4000-x)+(4500-x) +x = 9000

..............

...........collect like terms

9500-9000 = x

x = 500

KengaRu [80]2 years ago
7 0

Step-by-step explanation:

No of people likes tea = 4000

No of people like coffee = 4500

Total = 8500

No of people don't like tea and coffee = 2500

No of people like tea and coffee = 8500 - 2500 = 6000

You might be interested in
**Select all that apply**
Arte-miy333 [17]

Answer:

a and d

Step-by-step explanation:

8 0
3 years ago
AB¯¯¯¯¯ has end points at A (0, 5) and B (0, 0) . A transformation is performed on AB¯¯¯¯¯ and the image is A'B'¯¯¯¯¯¯¯ with end
Sati [7]
I did this but im not very good at it :( but i think the answer is either A or D sorry if im wrong :(
6 0
3 years ago
Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t
PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

P(X

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0
3 years ago
Please help.... what is it’s measure
Olegator [25]

right

Answer:

90°

Step-by-step explanation:

Type of angle foremd= right

Measure = 40° + 50° = 90°

8 0
3 years ago
Read 2 more answers
Jake's family is moving to a new home. They pack 22 boxes in 1 5/6 hours. What is the average number of boxes per hour? Explain.
lbvjy [14]
12 boxes per hour is the answer
7 0
3 years ago
Other questions:
  • An owner of a key rings manufacturing company found that the profit earned (in thousands of dollars) per day by selling n number
    8·1 answer
  • What is the percent increase.? original quantity :100 new quantity 106
    13·2 answers
  • What percent of 80 is 90
    9·1 answer
  • A pattern follows the rule "Starting with two, every consecutive line has a number one more than the previous line."
    14·2 answers
  • What is the quotient when −3x3 + 5x + 14 is divided by x − 2?
    5·2 answers
  • A plumber charges $50 for a service call plus $80 per hour. If she spends no longer than 8 hours a day at any one site, find a l
    5·1 answer
  • Gina Wilson all things math 2014
    10·1 answer
  • What is 1102 using the polynomial identity (a+b)2=a2+2ab+b2 ?
    10·2 answers
  • Which of the following expressions is correct?
    13·1 answer
  • Which of the following best explains why tan5π/6 ≠ tan5π/3​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!