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
valentinak56 [21]
3 years ago
8

Please simplify each expression for 18, 20, and 21

Mathematics
1 answer:
NeX [460]3 years ago
5 0
The answer to the questions

You might be interested in
Hayden wanted to investigate whether there was a difference in the time spent in the checkout line between two grocery stores. S
Ber [7]

Answer:

No.  The data in this study were not based on a random method.  This is a key requirement for an inference to be made from the two-sample t-test.

Step-by-step explanation:

1. Hayden can use the two-sample t-test (also known as the independent samples t-test)to find out if there was a difference in the time spent in the checkout time between two grocery stores and to conclude whether the difference in the average checkout time between the two stores is really significant or if the difference is due to a random chance.  There are three conditions to be met when using the two-sample t-test.

2. The first condition is that the sampling method must be random.  This requirement was not met in this study.  Each customer from each store should have an equal chance of being selected for the study.  This was not achieved.

3. The distributions of the sample data are approximately normal.  This is achieved with a large sample size of 30 customers selected for each study.

4. The last but not the least condition is the independence of the sample data.  Sample data here is independent for both samples.

5 0
3 years ago
Complete the table below to classify the triangles as scalene or isosceles.
Dmitry_Shevchenko [17]
First two are scalene last one is isosceles.
5 0
3 years ago
NEED HELP URGENT PLEASE IMAGE IN DESCRIPTION NO TROLL PLEASE BE NICE!!!
LiRa [457]

Answer:

23-5= 18

Step-by-step explanation:

4 0
2 years ago
Si f(x)=2x^{2}−3x+1 y g(x)=x−3. Entonces (f∘g)(−1) es:
WARRIOR [948]
Huh? this is very confusing 12
7 0
2 years ago
Find this quotient. <br> -36.86 <br> ______<br> -3.8 <br> The quotient is:
VMariaS [17]

Answer:

9.7

Step-by-step explanation:

First convert the numbers into whole numbers by multiplying both numbers by 100. Then divide the numbers by using long division.

8 0
3 years ago
Other questions:
  • How to write an equation in standard form
    15·1 answer
  • A shopper at a local supermarket spent the following amounts in her last eight trips to the store: $32.92 $14.14 $30.80 $28.34 $
    15·1 answer
  • For a few months, the function f(x)=15(3)^x represented the number of bees in a new hive x months from the time it was started.
    15·2 answers
  • A wall in Marcus's bedroom is 8 2/5 feet high and 16 2/3 feet long If he paints 1/2 of the wall blue, how many square feet will
    10·2 answers
  • If any two points can be connected by a line, how can you find the distance between two points connected by a line?
    14·1 answer
  • Which step shows the result of applying the subtraction property of equality? One-fourth (12 x + 8) + 4 = 3 Step Solution 1 3 x
    14·2 answers
  • 3. Solve for x.<br> 3r + 11<br> 9x-14
    8·1 answer
  • Help<br> Is it linear or exponential
    11·1 answer
  • Someone plz help me T^T
    12·1 answer
  • a drawing of a room has a scale of 1 inch = 4 feet. if the actual dimensions of the room are 14 feet by 16 feet. what are the di
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!