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
Svetlanka [38]
3 years ago
10

Which situation is an example of an observational study?

Mathematics
2 answers:
user100 [1]3 years ago
6 0

Answer:

s

Step-by-step explanation:

CaHeK987 [17]3 years ago
4 0

Answer:

D- Recording the reaction time of participants in a study who were asked to press a button as soon as they see a certain picture on a screen.

Step-by-step explanation:

You might be interested in
What is the solution to the equation below? Round your answer to two decimal places. log5 x=2.1
Natali5045456 [20]

Answer:

D. x=29.37

Step-by-step explanation:

To answer this question you have to understand how log work. Log is the abbreviation of logarithm and it works as an inverse function of exponentiation.  

The rules should be like this:

 

log_{a} b = c\\a^{c} = b\\

Variable a in the equation is called base. If it left empty you can assume its base 10. The log in this question using 5 as a base. Variable b will be x and variable c will be 2.1

Now, let's change the variable of the equation using the information from the question.  

log_{a} b = c\\\log_{5} x = 2.1\\5^{2.1} = x\\x= log_5}^{-1}2.1\\x=29.365473577\\x=29.37

5 0
3 years ago
Please help 7x1990x19x43
RideAnS [48]

Answer:

11380810

Step-by-step explanation:

hope this helps

8 0
3 years ago
Read 2 more answers
What information does a supply schedule provide?
aalyn [17]
It shows the supply for a product at various prices
5 0
3 years ago
Willian and Amy are stuffing envelope for a charity today, William stuff a total of 70 envelope. This is 10 more than twice the
LiRa [457]

Answer:

30

l

because it is 10 major then we remove those ten and it gives us 60 that between 2 is 30 :))

7 0
3 years ago
Helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
Mkey [24]

Answer:

62

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Compare 7.16 and 7.61
    9·1 answer
  • 8 If f(x) = x3, which of the following describes the graph of f(x + 2)? A. The graph of f(x + 2) is a horizontal shift of f(x) =
    8·1 answer
  • What is the reciprocal of cos0
    7·2 answers
  • Use pictures, nunbers ,and words to explain anothet way to say sixty five hundred
    14·1 answer
  • Sarah's restaurant bill came to US$18.80. She usually leaves a 15% tip. How much tip did
    12·1 answer
  • The numbers 1, 2, 3 , and 4 are drawn one at a time from the set {0, 1, 2, …, 9}. If these four numbers are drawn with replaceme
    5·1 answer
  • He needs to measure 3/4 cup but all he has is a tablespoon? How many tablespoons
    15·2 answers
  • F(x)= x² +5x-2<br> Find the vertex
    8·1 answer
  • 2x + 9 = 5x + 4 solve for x plsssss
    7·2 answers
  • Please Mom wants to keep track of Jeffrey's account balance for lunch at school equation be equals 50 - 10w represents the balan
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!