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
docker41 [41]
3 years ago
6

Determine whether the description corresponds to an observational study or an experiment.Research is conducted to determine if t

here is a relation between stomach cancer and alcohol consumption.
Mathematics
1 answer:
Maslowich3 years ago
8 0

Answer:

Observational

Step-by-step explanation:

Observational studies are studies that measure the outcome of events without the introduction of interventions. They are useful in the formation of a hypothesis. The experiment described above is an observational study that compares two groups so as to measure the predictors of an outcome. No intervention is introduced to influence the outcome of the research.

An experiment on the other hand is often organized as a randomized control trial where subjects are divided into groups and a placebo or control group is introduced to monitor the outcome of the study.

You might be interested in
Mary is 21 years old. Her age is 9 years more than 3 times Henry's age. Which equation can be used to determine x, Henry's age i
luda_lava [24]

Answer:

3x + 9 = 21

Step-by-step explanation:

Let Henry's age be x

Mary's age = 9 + 3x

21 = 9 + 3x

Can also be written as 3x + 9 = 21

4 0
2 years ago
a carpenter has three sheets of plywood that are each 6.85 feet long. a 3.4-foot piece is cut from one sheet 0.5-foot piece is c
STatiana [176]

Answer:

16.65 feet

Step-by-step explanation:

Okay, we have three boards that are each 6.85 feet long. If we cut 3.4 feet off one board, that board has:

6.85

−

3.4

=

3.45

feet left

If we cut off 0.5 feet off another board, that board has:

6.85

−

0.5

=

6.35

feet left

So, if we take our three new boards, the total length of plywood left is:

6.85

+

3.45

+

6.35

=

16.65

feet

Hope this helps!

7 0
3 years ago
Yari says that the product 230×104 has four zeroes. Is she correct? In the box below, explain your answer including how patterns
pogonyaev
No because the amount of zeros at the end of both numbers is the amount of zeros that's going to be in the product

7 0
3 years ago
Write as a single fraction in its simplest form.
yaroslaw [1]

\dfrac{4}{3x-5} + \dfrac{x+2}{x-1}\\\\\\=\dfrac{4(x-1) + (x+2)(3x-5)}{(3x-5)(x-1)}\\\\\\=\dfrac{4x-4 + 3x^2 -5x +6x -10}{(3x-5)(x-1)}\\\\\\=\dfrac{3x^2 +5x-14}{(3x-5)(x-1)}

5 0
2 years ago
Shad grids to show that 2 ones is the same as 20tenths
sattari [20]
Your answer is two rows of 10 =20
7 0
4 years ago
Other questions:
  • How are rates and ratios related?
    11·1 answer
  • What are the side lengths of a rectangle if the area = 40 in and the perimeter= 26 in
    8·1 answer
  • Help me with my math
    11·1 answer
  • An investment has an expected return of 12 percent per year with a standard deviation of 6 percent. Assuming that the returns on
    10·1 answer
  • Part of arianna’s earnings are based on a 5% commission rate. At the end of the day arianna warned 14.98 in commission. How much
    13·1 answer
  • The trapezoid is composed of a rectangle and two triangles. What is the area of the rectangle? What is the total area of the tri
    13·1 answer
  • You start driving from Austin to Houston with a constant speed of 120km/hr (75 mph). After 1.5 hr you stop for 0.5 hr. Then you
    7·1 answer
  • Solve the equation.<br><br> 12a=11
    10·1 answer
  • Evaluate the following expression if x=3: 2^x
    11·2 answers
  • Three subtracted from 5 x a number is -128. what is that number
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!