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
STALIN [3.7K]
3 years ago
13

Joanie wrote a letter that was 1 1/4 pages long. Katie wrote a letter that was 3/4 page shorter than Joanie's letter. How long w

as Katie's letter?
Mathematics
1 answer:
gladu [14]3 years ago
8 0
The answer to your question is 2/4 which is 1/2
You might be interested in
Express your answer as a decimal. 7÷25=
Over [174]

Answer:

0.28

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Obtain the required confidence interval for the difference between two population proportions. Assume that independent simple ra
Thepotemich [5.8K]

Answer:

The 95% confidence interval for the difference between the proportions of women and men who follow a regular exercise program = ( -0.293, 0.023)

Step-by-step explanation:

The formula for confidence interval for the difference between the proportions is given as:

p1 - p2 ± z × √p1 (1 - p1)/n1 + p2(1 - p2)/n2

From the question

We have two groups.

Group 1 = For women

A survey found that 37 of 74 randomly selected women

p1 = x/n1

n1 = 74

x1 = 37

p1 = 37/74

p1 = 0.5

Group 2 = For Men

A survey found out that 47 of 74 randomly selected men follow a regular exercise program

p2 = x/n1

n2= 74

x2 = 47

p2 = 47/74

p2 = 0.6351351351 ≈ 0.635

z = z score for 95% Confidence Interval = 1.96

The confidence interval for the difference between the proportions is given as:

p1 - p2 ± z × √p1 (1 - p1)/n1 + p2(1 - p2)/n2

0.5 - 0.635 ± 1.96 × √0.5 (1 - 0.5)/74 + 0.635(1 - 0.635)/74

-0.135 ± 1.96 × √(0.5 × 0.5)/74 + (0.635× 0.365)/74

-0.135 ± 1.96 × 0.08068750209663572

-0.135 ± 0.158147504109406

Hence:

= -0.135 - 0.158147504109406

= -0.2931475041

Approximately = -0.293

= -0.135 + 0.158147504109406

= 0.0231475041

Approximately = 0.023

Therefore, the 95% confidence interval for the difference between the proportions of women and men who follow a regular exercise program = ( -0.293, 0.023)

6 0
3 years ago
Algebra Find the value of n :<br><br> n × 0.2 = 0.08
noname [10]

Answer:

0.4

Step-by-step explanation:

n × 0.2=0.08

n = 0.08÷0.2

n = 0.4

6 0
2 years ago
Read 2 more answers
150+75x=400+25x<br>For how many hours of service will both companies charge the same amount?
sweet-ann [11.9K]
Just do inverse operation.
7 0
3 years ago
It costs $3 for a pack of 20 pencils. Find the cost per pencil.
Cerrena [4.2K]

Answer:

20/3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • A car traveled five miles in six minutes.<br>What was its speed in miles per hour?​
    15·2 answers
  • The table shows a proportional relationship.
    5·1 answer
  • The senior class has a picnic during the last week of classes. Each member of the class can choose to have a hamburger, hotdog,
    8·2 answers
  • Can anyone help I’ll mark brainliest
    11·1 answer
  • What is the product of 38x$12
    12·2 answers
  • Need help asap, marking first as brainliest, would really appreciate it.
    12·1 answer
  • Use the diagram to determine which is the correct net of the given figure. Then, explain why the other nets are not correct--exp
    5·1 answer
  • Is the expression <br> 3/4a (16b + 24) equivalent to 12ab + 18a? <br> SHOW YOUR WORK
    5·1 answer
  • A comparison of 2 numbers is a
    11·1 answer
  • Find polar coordinates of the point whose cartesian coordinates are given. (-2√3 , 2)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!