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
vredina [299]
3 years ago
13

Help Please?? 12. Of the following, which one is an observational study? A. Asking hearing-impaired people to try a new style of

earphone to get their opinion B. Comparing survival rates between treating bone cancer with surgery versus treating it with radiation C. recording the daily output of a balloon factory for 6 months D. polling people on their favorite color I believe it would be 'C', yes?
Mathematics
2 answers:
EleoNora [17]3 years ago
6 0
I don’t really kno but it should be d
Semmy [17]3 years ago
4 0
The answer to your question is d

You might be interested in
Mrs. hunnycutt makes dog sweaters. Her profit each month is a function of the price she charges for each sweater. Her total prof
V125BC [204]
Answer



Step by step explanation
3 0
3 years ago
The area of one side of a skyscraper is 90,000 square feet. The area of the corresponding side of a scale model is 200 square in
Varvara68 [4.7K]
90000 is 450 times to 200^inches (there is not width is given)

1.6inch  i guess..am not sure..need  to wait for more answer
7 0
3 years ago
3. A recipe calls for 2 cups of sugar to make 2 dozen cookies. Use the proportion to calculate how much sugar is needed to make
vova2212 [387]

Answer:

c. 6 cups

Step-by-step explanation:

The proportion is 1 cup of sugar for 1 dozen cookies (1/1). So if you multiply the denominator by 6 you must multiply the numerator by 6, and 6*1=6. Therefore you need 6 cups of sugar to make 6 dozen cookies.

7 0
3 years ago
Read 2 more answers
Explain why S = {(5, 4, -2), (-15, -12, 6), (10, 8, -4)} is NOT a basis for R^3 (1 point Sis linearly dependent and spans R3 S i
earnstyle [38]

S would be a basis for \mathbb R^3 if

(1) the vectors in S are independent, and

(2) the vectors span \mathbb R^3.

  • Linear independence requires that c_1=c_2=c_3=0 is the only solution to

c_1(5,4,-2)+c_2(-15,-12,6)+c_3(10,8,-4)=(0,0,0)

These vectors are not linearly independent because if c_1=3, c_2=1, and c_3=0, we have

3(5,4,-2)+(-15,-12,6)=(15-15,12-12,-6+6)=(0,0,0)

so S is not a basis for \mathbb R^3.

7 0
3 years ago
How many 8 oz bags of trail mix can be filled from a 10 pound bag of trail mix?​
dangina [55]

Answer:

20 bags

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Solve −5x = 15. (1 point)<br><br><br> −3<br> 3<br> 10<br> 20
    13·2 answers
  • Is it more difficult to run up a ramp with a slope of 15 or a ramp with a slope of 5? Explain.
    7·1 answer
  • What are the coordinates of point B in the diagram?
    15·2 answers
  • Help me guys pls pls pls i need a 70 or higher
    11·1 answer
  • 5 points
    7·1 answer
  • Find the area of the shape shown below.
    9·1 answer
  • A set has 62 proper subsets how many elements has it for?<br>​
    14·1 answer
  • Label the following as either function or relation ​
    10·1 answer
  • Someone please help me with these. I forgot how to do these. Need within a hour
    11·1 answer
  • An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!