Stratified random sample would be the sampling design for the best information.
• In statistics, stratified sampling is an method of sampling from a population which can be divided into subpopulations. In surveys based on statistics, when subpopulation within an overall population var, it could be advantageous to sample each population separately.
• For example one may divide a sample of children into subgroups by age like 1-5,6-10,11-15 and above.
• The benefits of stratified sampling is that you can obtain reasonably precise estimate for subgroups related to the research.
• One disadvantage of stratified sampling is that the selection of appropriate strata for a sample of your research may be difficult.
• The effective use of stratified sampling can be Analysing 30% of the items under $30,000.
In this question we use stratified sampling.
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Write y=−4x−4 in standard form .
Answer:
Y=-4x-4= [tex]x=- \frac{y+4}{4}[/tex]
Step-by-step explanation:
Answer: The answer is x=–y+4/4?
Step-by-step explanation:
Hey, Whats The answer please explain your answer marking brainliest:D...............................
Answer:
B. Kevin is correct. Amy did not line up the decimals correctly.
Step-by-step explanation:
Answer: B
Step-by-step explanation:
B- kevin is correct because amy did not line up the decimals correctly
PLEASE HELP MY ASSIGNMENT IS DUE IN LESS THAN A HOUR!!!!
Answer:
77 degrees c:
Step-by-step explanation:
Solve for x: 3x + 4 = 9x + 3
Answer:
x = 1/6
Step-by-step explanation:
Subtract 4 from both sides of the equation.
3x + 4 - 4 = 9x + 3 - 4
Simplify, subtract the numbers.
3x = 9x - 1
Subtract 9x from both sides of the equation.
3x - 9x = 9x - 1 - 9x
Simplify, combine like terms.
-6x = -1
Divide both sides of the equation by the same term.
-6x/-6 = -1/-6
Simplify, cancel terms that are in both the numerator and denominator, and divide the numbers.
x = 1/6
The solution to the given equation 3x + 4 = 9x + 3 is x = 1/6.
The equation is given as follows:
3x + 4 = 9x + 3
To solve the equation 3x + 4 = 9x + 3 for x, we need to isolate the variable x on one side of the equation.
Start by subtracting 3x from both sides of the equation to move all the terms involving x to one side:
3x - 3x + 4 = 9x - 3x + 3
4 = 6x + 3
Next, subtract 3 from both sides to isolate the term with 6x on the right side:
4 - 3 = 6x + 3 - 3
1 = 6x
Divide both sides of the equation by 6 to solve for x:
(1)/6 = (6x)/6
1/6 = x
Thus, the solution to the equation is x = 1/6.
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factorise 7t-6u+5t-4u
Answer:
-2u(3+2) + t(7+5)
Tip: arranging the like terms next to each other helps to keep things from getting messy.
Identify the slope shown in the linear equation below. y = - 5x + 3
Answer:
Slope: -5 Y-intercept: 3
Step-by-step explanation:
the slope intercept of a linear equation is:
y=mx+b
were m is slope. and b is the y intercept
therfore the problem is:
y=-5x+3
m=-5 so the slope is -5
b=3 so the y-intrercept is 3
Answer:
-5
Step-by-step explanation:
The slope is always in front of the x
I ordered some books online for myself and friends. Each book costs $13 and the store charges a flat rate for shipping of $20. Write an algebraic expression to show the total cost of the books. Let n represent the number of books.
Answer:
13n+20
Step-by-step explanation:
Answer: the answer is 13n+20
Step-by-step explanationn: IM TAKING THE TEST
I need hellpppp please help meee
Answer:
i believe >
Step-by-step explanation:
Jorie leaves work 30 minutes late. She decides to make up time by taking the toll road instead of side streets. She can travel four times faster by taking the toll road. Create an equation to represent her total travel time, including wait time, where x is the number of minutes the drive was expected to take.
y equals one fourth times x minus thirty
y = 4x − 30
y equals one fourth times x plus thirty
y = 4x + 30
Answer:
option C
Step-by-step explanation:
We know that the toll road is 4 times faster than the side streets.If 'x' represents the number of minutes she usually spend taking the side streets. The represents the time she takes taking the toll road.Also we need to create an equation to represent her total travel time, including wait time
HELP ME FIND X ASWELL PLEASE USING THE SAME KITE
Answer:
a=18units
x=99°
y=108°
Step-by-step explanation:
Perimeter=sum of lengths around the kite.
Given that two sides each are congruent:
P=12+12+a+a
60=24+2a
60-24=2a
36=2a
a=36/2=18
x=99°
y+99+99+54=360°(sum of interior angles of a quadrilateral)
y+252=360
y=360-252
y=108°
Bonnie is three times as old as her brother, h. The sum of their ages is less than 44. What is the greatest age Bonnie’s brother can be?
Which inequality models this problem?
A. 3h + h 44
D. 3h + h ≥ 44
Solve:
4. Paula drew a map of her neighborhood on a coordinate grid. A grocery store is located at point (5,-4). A park is located at point (-5,4). Paula's house is located halfway between the grocery store and the park. A school is located halfway between Paula's house and the park. What are the coordinates of the school?
Answer:
Midpoint Formula= (x1+x2)/2, (y1+y2)/2
Plug in the numbers
Answer= (0, 0)
I hope this helps you!!
What is 3/4 divided by 1/8? Explain or show your reasoning.
Answer:
6
Step-by-step explanation:
You just have to flip 1/8 and do 3/4 x 8/1 which would equal to 6.
Can you please help me with 6
Answer:
Third choice, 3/4
Step-by-step explanation:
Add all the cubes together, 12 + 5 + 3 = 20
There's a 12/20, which is 3/5, chance you'll get a green cube
5/20, which is 1/4, chance you'll get a blue cube
And there's a 3/20 chance you'll get a yellow cube
The probability of not getting a blue cube is 12/20 + 3/20 = 15/20 = 3/4
ASAP PLZ HELP ME WITH THE QUESTION
Answer:
(0, 0)
Step-by-step explanation:
None
13x + 9 equals 6x - 12
Answer: okay is that a question?
Step-by-step explanation:
Answer:
[tex]given \\ 13x + 9 = 6x - 12 \\ = > 13x - 6x = - 12 - 9 \\ = > 7x = - 21 \\ = > x = \frac{ - 21}{7} \\ = > x = - 3[/tex]
it may be helpful for youif any problem then consulting with methe clock below shows what time mason mom drop him off for practice. what time does his mom drop him off
Answer:
4:05?
Step-by-step explanation:
Answer:
?
Step-by-step explanation:
This doesn't make sense.
another trigonometry question
i just want this test to be over >-
Answer:
e) cos(90-x)
Step-by-step explanation:
sinx=cos(90-x)
What is [tex]\frac{2}{5}[/tex] as a decimal
Answer:
0.4
Step-by-step explanation:
2 x 20=40
5 x 20=100
40/100= 0.40 simplified as 0.4
Answer:
2/5 as a decimal is 0.4
Step-by-step explanation:
2 divided by 5 would equal 0.4
Someone help!Will give 20 brainly
What are the valid values of x in:
16−−√+x=10
The valid values of x is x = 36
How to determine the valid values of x?The equation is given as
16 - √x = 10
Subtract 16 from both sides of the equation
So, we have
√x = -6
Take the square of both sides of the equation
So, we have
x = 36
Hence, the valid values of x is x = 36
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Which of the following is equivalent to 7(a + 4) + 15?
7a + 43
7a + 19
7a + 60
28a + 15
Answer:
7a + 43
Step-by-step explanation:
Let's simplify step-by-step.
7(a+4)+15
Distribute:
=(7)(a)+(7)(4)+15
=7a+28+15
Combine Like Terms:
=7a+28+15
=(7a)+(28+15)
=7a+43
Answer:
7a + 43
Step-by-step explanation:
Given:
7(a + 4) + 15
Solve:
Distribute:
7(a + 4) + 15
7 × a = 7a7 × 4 = 28Now we have:
7a + 28 + 15
Add the numbers:
28 + 15 = 437a + 43
Therefore, 7a + 43 is equivalent to 7(a + 4) + 15.
Kavinsky.
Simplify the expression by combining like terms.
15 + 12z– 5z + 4y- 7
Answer: = 4y + 7z + 8
Answer:
7z+4y+8
Step-by-step explanation:
Collect the like terms so 12z-5z would be 7z, then since there is only 1 y term it would be 4y, and -7 + 15= 8
ASAP PLZ HELP ME WILL AMRI AS BRAINLIST
Answer:
x=4
Step-by-step explanation:
Answer:
x=4
Step-by-step explanation:
am I'm correct I linked a picture with it
Answer: B
Step-by-step explanation:
Use the Triangle Theorem.
Now, we have to find every number involved squared.
2² = 4
3.6² = 12.96
Add the given components.
12.96 + 4 = 16.96
Our final answer is 16.96
Best of Luck!
Answer:
TRUST ME ITS C
Step-by-step explanation:
use the theorem
2 squared is 4
3.6 squared is 12.96
you need to add them which is 16.96 and find its square root
what is the slope of the line described by the equation below y-6=-2(x-8)
Answer:
-2
Step-by-step explanation:
you have to rearange in the form of
y=mx+b, where m is the slope
y -6= -2( x-8)
y = 6 -2x + 16
y= -2x +22
slope is -2
please help first answer will be marked brainiest
Answer:
6x
Step-by-step explanation:
add sides up
How long is the carrot?
Answer:
4 3/4 inches
Step-by-step explanation:
Answer:
[tex]4\frac{3}{4}[/tex]
Step-by-step explanation:
Need help for this one!!
Find the angle of elevation
from point C to point A.
A
?
59°
402 m
C
B
Angle of elevation = [?]°
what is the last number to put in the following question i am confused ..
Answer:
2^6
Step-by-step explanation:
2^6=64
2x2x2x2x2x2=64
it's 2 to the power of 6