Answer:
Opportunity sampling is also known as convenience and it can be defined as a sampling technique which typically involves the process of selecting participants from a population of interest (target group) to take part in a research study.
Step-by-step explanation:
In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.
There are various types of sampling used by researchers and these are;
1. Random sampling.
2. Systematic sampling.
3. Stratified sampling.
4. Cluster sampling.
5. Opportunity or convenience sampling.
Opportunity sampling is also known as convenience and it can be defined as a sampling technique which typically involves the process of selecting participants from a population of interest (target group) to take part in a research study.
This ultimately implies that, an opportunity sampling is a non-probability sampling in which a researcher select participants based on their availability for the study.
For example, John a psychologist standing on the street requesting that passersby join in his research study.
1. -5(-4/7)=
2. 2(-3)=
3. -2(-2.6)
4. -5(0.8)
A circle has circumference 33.9 cm. What is the area of the circle? Use 3.14 for .
The area of the circle is about cm?
(Round the final answer to the nearest whole number as needed. Round all intermediate values to the nearest thousandth as needed.)
Answer:
The area is 902[tex]cm^{2}[/tex]
Step-by-step explanation:
[tex](\frac{33.9}{2})^{2}[/tex] * 3.14
= [tex]16.95^{2}[/tex] * 3.14
= 287.303 * 3.14
≈ 902[tex]cm^{2}[/tex]
Find slope of a line using points (2,0) and (4,3)
Find the distance between the points (9, –6) and (–4, 7). Question 15 options: A) B) C) D)
Answer:
[tex] \huge \boxed{ \boxed{ \tt \sqrt{170} }}[/tex]
Step-by-step explanation:
to understand thisyou need to know about:coordinatesPEMDASgiven:point:(9,-6),(-4,7)tips and formulas:[tex]d = \sqrt{(x _{2} - x _{1} ) ^{2} + (y_{2} - y_1 {)}^{2} } \atop[/tex]let's solve:[tex] \sf substitute \: the \: value \: o f \:x _{2} \: x _{1} \: y_{2} \: y_1 \: respectively : \\ \sqrt{(9-(-4) ) ^{2} + (-6 - (-7){)}^{2} } [/tex][tex]\sf simplify : \\ \sqrt{(9-(-4) ) ^{2} + (-6 - (-7){)}^{2} } \\ \sqrt{(9 + 4 {)}^{2} + ( - 6 + 7 {)}^{2} } \\ \sqrt{ {13}^{2} + {1}^{2} } \\ \sqrt{169 + 1} \\ \sqrt{170} \\ [/tex]Nora and Violet had saved their babysitting money at a ratio of 5:9. Nora has $48 less than Violet. How much money do they have in total?
Answer:
168
Step-by-step explanation:
9-5 = 4 = 48
48 / 4 = 12
12 x ( 9 + 5 )
168
State if the three numbers can be measures of the sides of a triangle. 11,6,3
Answer:
no ..they can't as 6+3 is not greater than 11
This also came with it :Complete the table for the following function:
Y = 8x - 5
Please help me and dont mind my work I did on the side im pretty sure I got it wrong.
Answer:
x y
3 19
5 35
-2 -21
1 3
4 27
Step-by-step explanation:
I went through and mutliplied each x value by 8 and then subtracted 5. You were almost there!
Use the formula v= u + at to find the final velocity (in m/s), when
• the initial velocity is 3 m/s
• the acceleration is 2.5 m/s?
• the time is 12 seconds
for every 5 red cars there are 8 black cars. If there are 24 more black cars than red cars how many total vehicles are there
Answer:
15 red cars + 24 black cars = 38
The total vehicles are 104.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
For every 5 red cars there are 8 black cars.
And, There are 24 more black cars than red cars.
Here, For every 5 red cars there are 8 black cars.
Hence, Number of red cars = 5x
Then, Number of red cars = 8x
And, There are 24 more black cars than red cars.
Hence, We get;
⇒ 24 + 5x = 8x
Solve for x as;
⇒ 24 = 8x - 5x
⇒ 24 = 3x
⇒ x = 8
Thus, Number of total vehicles = 5x + 8x
= 5×8 + 8×8
= 40 + 64
= 104
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ5
help please- ._. i’ll give brainliest-
Answer:
4.41
Step-by-step explanation:
a(3.15)
(1.4)(3.15)
1.4 x 3.15 = 4.41
A spinner is divided into 12 equal parts. The probability of spinning an x is
How many of the parts are labeled x?
7
9
3
4
Answer:
3
Step-by-step explanation
3 x 4
Answer:
3
Step-by-step explanation:
Could anyone help, if you could?
Answer: Your answer is B! Hope you have an awesome day, and be kind be You!!! <3
Step-by-step explanation: Also, I'm 3D printing the Tesla Cyber truck, and this is the design I have so far. What do you think?
Pls help me, I don't know how to do it?:(
Answer and Step-by-step explanation:
Alot of these can be solved with the table up above the problems.
A, B, and C.
According to the table, every time a value has an exponent of 0, it would equal to 1. Since all A B and C values follow the 0 exponent, their value is 1.
D.
According to the table, when we have a negative exponent, the number gets turned into a fraction of [tex]\frac{1}{x^x}[/tex]
Since our value is 9^-2, do as followed :
[tex]\frac{1}{9^2}[/tex]
Solve what is 9^2 :
[tex][\frac{1}{81} ][/tex]
E.[tex]\frac{1}{x^{-5} }[/tex]
This question is different, since we have to go backwards, we have to switch the negative exponent to a positive exponent and rid the fraction.
[tex]x^5[/tex]
F.[tex]5a^3b^{-2}[/tex]
Since we have one negative exponent, follow the fraction rule but instead of having one as the numerator, have 5a^3.
[tex]\frac{5a^3}{b^{2}}[/tex]
Fill in the table :[tex]-3^4 = -3*-3*-3*-3=-81[/tex]
Since -3 is in parenthesis, we can rid the negative along with the parenthesis :
[tex](-3)^4=3^4=3*3*3=81[/tex]
Follow the negative exponent rule :
[tex](-3)^{-4}=\frac{1}{(-3)^4} =\frac{1}{3^4} =\frac{1}{3*3*3*3}= \frac{1}{81}[/tex]
Follow the negative exponent rule yet again :
[tex]-3^{-4}=-\frac{1}{3^4} =-\frac{1}{3*3*3*3} =-\frac{1}{81}[/tex]
Select the correct answer.
What is the current value of a future sum of money called?
А. Current value
B. Present value
C. Future value
Answer:
C. Future value
Step-by-step explanation:
It says FUTURE value so its the future value?(i think im not too sure)
hope this helped :))
Answer:
B.) Present Value
Step-by-step explanation:
Present value is the current value of a future sum of money.
Pls help (25 points)
Answer: 20
Step-by-step explanation:
4 x 2 = 8
4 x 2 = 8
+
---------
16 round to twenty
Consider the two account balances.
Which statement is true?
*please help, will mark as brainliest*
Answer: I believe the answer is B
Step-by-step explanation:
Usually if there is a negative with regards to balance it represents debt.
How Many texts?please help.
Answer:
176
Step-by-step explanation:
91/9.10=0.10
17.60/0.10=176
Answer:
176
Step-by-step explanation:
Logan is 2 years older than Lindsey. Five years ago, the sum of their ages was 30. Find Lindsey’s
current age.
Answer:
lindsey = x = 19
logan = x + 2 = 21
Step-by-step explanation:
lindsey =x
logan = x + 2
-------
5 yrs back
lindsey = x - 5
logan = x + 2 - 5 = x - 3
~~~~~~~~~~
x- 5 + x - 3 = 30
x + x - = 30 +5 +3
2x = 38
x = 38/ 2 = 19
Write the quadratic equation where the roots are -1/3 and 5
Answer:
f(x) = 3x² - 14x - 5
Step-by-step explanation:
multiply the factors: (x + 1/3)(x - 5)
x² - 5x + 1/3x - 5/3
x² -14/3x - 5/3
multiply by 3 to eliminate fractions:
3x² - 14x - 5
1. Two students went to McDonald's. They each bought the same snack, which included a shake
and a burger. The shakes cost $2 each. In total, they spent $12.
Part A: Enter an equation to represent this equation. Let x represent the cost of one burger.
Part B: Enter the cost of one burger.
Answer:
12-2=10 b=10
Step-by-step explanation:
Solve each problem. Round to the nearest tenth if necessary. Use 3.14 for π. What is the radius of a circle with a circumference of 15 cm? Show your work! I will be giving out brainliest!
Answer:
2.3
Step-by-step explanation:
First off, you start with the circumference formula which is 2(pi)r. Since we know our circumference, we can create the equation solving for r. so we have 15=2(pi)r. Now in order to solve for r, we need to transfer everything to the other side, meaning dividing by 2(pi). So 15/2(pi)=2(pi)r/2(pi). Since we are using 3.14 for pi, 3.14*2 is 6.28. 15/6.28 which is about 2.388 So the radius of the circle is 2.3 (rounded to the nearest tenth)
A company is tracking how many of the cell phones it produces do not meet specifications. It runs a simulation 100 times and records how many defects are in each simulated sample of 1000 phones.
Answer: The p-value is 0.18, which is more than 0.05. Fail to reject the null hypothesis.
Step-by-step explanation: Well I took the quiz and that was the answer...
A quadratic equation has a
discriminant equal to 5. What
does this tell you about the
solution(s) to the equation?
Answer:
[tex]\boxed {\boxed {\sf 2 \ real \ solutions }}[/tex]
Step-by-step explanation:
The quadratic formula is:
[tex]{x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}[/tex]
The discriminant of a quadratic is just the expression under the square root, or [tex]b^2-4ac[/tex]. This can tell us the number of solutions a quadratic has.
If the discriminant is:
Positive = 2 real solutions Equal to Zero = 1 real double/repeated solution Negative = 0 real solutions, but 2 imaginary solutionsOur quadratic equation has a discriminant of 5, which is positive. Therefore, it has 2 real solutions.
HELP HELP HELP!!!!!!!!!!!!!!!!!!!!!!!!!
I don’t know if it’s true or false I need help
Answer:
True
Step-by-step explanation:
What is the solution
-3x + y = 2
y = x + 4
Answer:
to find the solution, we substitute y = x + 4 into the other equation.
-3x + (x + 4) = 2
-3x + x + 4 = 2
-2x = 2 - 4
-2x = -2
x = 1
to find y, we substitute x to the x variable in the y equation.
y = 1 + 4
y = 5
therefore, when combined, it is (1,5).
In ΔQRS, s = 860 inches, q = 240 inches and ∠R=144°. Find the length of r, to the nearest inch.
Answer:
1064
Step-by-step explanation:
Answer: 1064
Step-by-step explanation:
solve for x
(5x+6)(6x-25)=180
Step-by-step explanation:
5x+6+6x-25=180
We move all terms to the left:
5x+6+6x-25-(180)=0
We add all the numbers together, and all the variables
11x-199=0
We move all terms containing x to the left, all other terms to the right
11x=199
x=199/11
x=18+1/11
What is the area of the figure? O 1240 units? 0 1250 units? o 2490 units? 0 3730 units
Answer:
2490
Step-by-step explanation:
The 2 shapes are triangle and trapezoid
Area of a triangle formula: A= h×b/2
A=40×62/2
A=1240
Area of a trapezoid formula: base¹+base²/2×height
A= 38+62/2×25
A=1250
Add both areas together
1250+1240=2490
Please help fasttttttt
Answer and Step-by-step explanation:
Let x be for mimstoons, and y be for naxvips.
The equations would be:
x + y = 60
1x + 4y = 60
x is for the amount of mimstones, while y is for the amount of naxvips, and when we add these together, we get the 60 amount of both the items combined.
With the second equation, we multiply the amount that was bought times the price to get the total price of $60.
#teamtrees #WAP (Water And Plant)