Answer:
An observational study
Explanation:
observational studies are those a study where the researcher observes the effect of a defy factor, diagnostic test, treatment or other intervention without trying to change who is or isn't exposed to it. Cohort study and control studies are of two observational studies. These are the part of fundamental of epidemiological research. These are called observational studies because the investigators observe individuals without manipulation and intervention. These studies are an important category of study design. Well, design observational studies maybe the next best method to address these types of questions.
Answer:
If the first number is x and y is the second number
x = 11
y = 18
Step-by-step explanation:
If x is the first number and y is the second number then:
x + 7 = y
The sum of the two numbers is expressed as:
x + y = 29
In order to find what the two numbers are, use what you know. According to the first equation, y equals the first number(x) plus 7, so you can substitute that for the y in the second equation
x + y = 29
x + (x + 7) = 29
2x + 7 = 29
2x + 7 - 7 = 29 - 7
2x/2 = 22/2
That means x equals 11
Now that x is known, you can find the value for y. The second number(y) is 7 more than than the first number(x) so that means x + 7 = y
11 + 7 = y
y = 18
The amount he had left plus the two amounts he spent equal the total amount of the check. Add the three amounts together.
$97.75 + $40.20 + $7.40 = $137.95 + $7.40 = $145.35
The slope of the line is undefined because the line doesnt pass through the origin. In order to calculate the slope the line must both be straight and pass through the origin.
Answer:
option A
The base is e^-1
Step-by-step explanation:
Given in the question a function, f(x) = (1/e)
This function can also be write as.
f(x) =
by using Negative Exponent Rule
This says that negative exponents in the numerator get moved to the denominator and become positive exponents.
