The answer is 4 my good man
Answer:
(a)
- Independent Variable- Dosage of Omega-3 Fatty Acids
- Dependent Variable - Number of news item remembered
(b)Discrete
(c)Ratio Scale and Discrete Variable
(d) Experimental Method
Step-by-step explanation:
The psychologist wants to evaluate the claim that omega-3 fatty acids can help improve memory in normal adult humans.
(a)In the study, the participants in the two groups were given fish extracts containing Omega-3 (500 mg) and no Omega-3 (0 mg).
The memory test involves measuring the number of items each participant remembers from the past three weeks of news.
Therefore:
- Independent Variable- Dosage of Omega-3
- Dependent Variable - Number of news item remembered
(b) The dependent variable is discrete since the number of news items remembered can only be whole numbers.
(c)The independent variable is in milligrams of Omega-3 where the placebo is 0 mg. This is a ratio scale since it has an absolute zero.
Since the dosage is given in multiples of 50mg, it is a discrete variable.
(d)Since the psychologist seeks to manipulate the conditions of the study by introducing Omega-3 to some of the participants and placebo to other participants, it is an experimental distribution.
Answer:
y = - 140
Step-by-step explanation:
The statement
y varies jointly as x & z is written as
<h3>y = kxz </h3>
to find y when x = 7 and z = -5 we must first find the relationship between the variables
when y = - 180
z = 15
x = - 3
- 180 = k(15)(-3)
-180 = - 45k
Divide both sides by - 45
k = 4
The formula for the variation is
<h2>y = 4xz</h2>
when
x = 7
z = -5
y = 4(7)(-5)
y = 4(-35)
<h3>y = - 140</h3>
Hope this helps you
Answer:
A. 1
Step-by-step explanation: You have to substitute the numbers in for x
A. 1:
-5x -1 < -9
-5(1) - 1 < -9
-5 - 1 < -9
-6 < -9
B. 2:
-5x - 1 < -9
-5(2) - 1 < -9
-10 - 1 < -9
-11 < -9
C. 3:
-5x - 1 < -9
-5(3) - 1 < - 9
-15 - 1 < -9
-16 < -9
D. 4:
-5x - 1 < -9
-5(4) - 1 < -9
-20 - 1 < -9
-21 < -9
- Remember, a negative plus another negative is a negative
Hope this helps you!!! :)
Answer:
X>3
Step-by-step explanation:
