Population is like superset of sample. The population and sample for this case are:
Population is: The junior class' students of the considered high schoolSample is: Those 75 randomly selected students.What is the difference between population and sample?The difference between population and sample is that sample is taken from the population.
Why do we do sampling?We do sampling so that we don't have to work on entire population of items but only on that sample in a way that we can predict information about population.
Most of the times, it isn't possible in real world to work on entire populations. Samples come out for rescue by assumptions that they will have some properties of the population pertained in them.
Thus, the sample should be taken out such that it includes data of the population as much as it can in unbiased way so as to imitate population.
For this case, we have:
75 students were randomly selected from the junior class at a high school.
Since 75 students were selected from junior class, thus:
the population was: The junior class' students of that high schooland, the sample was: Those 75 randomly selected students.Learn more about sampling here:
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Answer:
Step-by-step explanation: second part is 15-55
Write an expression for "twice as much as a number added to 30."
Step-by-step explanation:
2x = x + 30
due to the fact that x is the number added to 30 and the second number is twice as much as x
if this helped pls give brainliest
PLEASE HELP I SWEAR I WILL GIVE BRAINLIEST PLEASEE:(:( pic included
Answer:
SoRrY i JuSt NeEd SoMe PoInTs :)
Step-by-step explanation:
Find the area of the parallelogram.
14 cm
E
14 cm
Answer:
area= 22cm× 14cm= 308cm²
please mark it as brainlist answer
Step-by-step explanation:
What is Greatest value of 33,103
Answer: the greatist value is 30,000
Step-by-step explanation:
Please help me figure out which one is greater for a b c
Answer:
A.the first one B.the second one C. the second one
Step-by-step explanation:
A. 17*10 to the power of 8 is just adding 8 zeros so it would be 1700000000 and the other is 400000000 so clearly 17 one is greater
B. 2000000 or 7839000 the second one is bigger
C. 420000000 or 850000000 the second one is bigger
Kim is trying to lose weight. She is currently 186 lbs. Her goal is to lose 2.2 lbs. a week until she is down to 153 lbs. How many weeks will it take her to get to her goal weight?
PLEASE HELP I NEED THIS DONE ASAP!
Answer:
10/20 or 1/2
Step-by-step explanation:
There are 10 pink balls out of 20. (add all the numbers together)
So that means there is a 10/20 chance to get a pink ball.
Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
So, the probability is the number of favored outcomes/ number of possible outcomes.
In this case, the favored outcomes is pink, which is 10.
The number of possible outcomes is 2+1+10+2+5 = 20
This gives us 10/20, which is 1/2 when simplified
Please help, i would appreciate it <3.
Answer:
B and C
Step-by-step explanation:
area of square= 81
L^2= 81
L=√81
L=9ft
Consider the figure. Determine the value of y.
Answer:
47+ y = 180 (linear pair)
y = 133
3. You have a job where you make $15 an hour. You want to
earn $165 this week so that you can buy a new stereo. How
many hours, h, do you have to work in order to earn the $165?
Answer:
11 hours
Step-by-step explanation:
The graph shows how much insulin, in micrograms (mcg), is in a patient's body after receiving an injection. Write an equation giving the number of mcg of insulin, `m`, in the patient's body h hours after receiving the injection.
By using the first two points on the graph, we conclude that exponential equation is:
y = 200*(0.4)^t
What is the equation?We assume that the equation is an exponential decay of the form:
y = A*(r)^t
When t = 0 we have:
y = A
On the graph we can see that the initial value is 200, then A = 200, so we have:
y = 200*(r)^t
By looking at the graph we can see that:
80 = 200*(r)^1 (this is the second point graphed).
Solving for r we get:
80 = 200*(r)
80/200 = r = 0.4
Then the exponential equation is:
y = 200*(0.4)^t
If you want to learn more about exponential equations, you can read:
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A number less than 12
Than is a switch word
Answer:
N 12
Step-by-step explanation:
Can someone help me !!! Pleaseee!!
Answer:
someone else had same question before you did https://brainly.com/question/11677565Step-by-step explanation:
if sara had 5 apples and gave 3 away how many would she have left
Answer:
2 apples
Step-by-step explanation:
These are my 5 apples... οοοοο
If I give 3 of my apples away... οο
You can see that there are 2 apples left.
5 - 3 = 2
Simplify the expression below. Show all steps
Answer:
Your answer is: 3x^2y3√y
Step-by-step explanation:
Look below : )
Hope this helped : )
I need help heres the question:
he price of a normal meal is $6.75. On tuesday, the meal is on sale for for $1.00 off for the regular price. Sarah brought 4 of thease meals on Tuesday. What is the total cost of these 4 meals before the tax?.
Please help!!
Answer:
the cost of the four meal is $4.00
Austin bought three boxes
containing chocolates, each
at $4.61 and four boxes with
pastries, each at $3.20.
How much in total did he
have to pay?
Answer:
$26.23
Step-by-step explanation:
$4.61 times 3 equals $13.83
and $3.20 times 4 equals $12.8
does anyone know the exponent rules
The exponent rules are given below.
We are given that;
To state exponent rules
Now,
Exponent rules are the laws or principles that govern the operations on numbers or variables with exponents. An exponent is a number or a variable that tells how many times to use the base in a multiplication.
There are different exponent rules for different situations, such as multiplying, dividing, raising to another power, or having a negative or fractional exponent. Here is a table of some common exponent rules with examples:
| Rule | Example |
[tex]| x^1 = x | 6^1 = 6 |[/tex]
[tex]| x^0 = 1 | 7^0 = 1 |[/tex]
[tex]| x^-1 = 1/x | 4^-1 = 1/4 |[/tex]
[tex]| x^m * x^n = x^(m+n) | 2^3 * 2^4 = 2^(3+4) = 2^7 |[/tex]
[tex]| x^m / x^n = x^(m-n) | 2^5 / 2^3 = 2^(5-3) = 2^2 |[/tex]
[tex]| (x^m)^n = x^(mn) | (2^3)^2 = 2^(3*2) = 2^6 |[/tex]
[tex]| (xy)^n = x^n * y^n | (3*4)^2 = 3^2 * 4^2 |[/tex]
[tex]| (x/y)^n = x^n / y^n | (4/2)^3 = 4^3 / 2^3 |[/tex]
[tex]| x^(m/n) = n-th root of x^m | 2^(6/3) = cube root of 2^6 |[/tex]
We can use these rules to simplify expressions with exponents or to perform calculations with them.
Therefore, by exponentiation answer will be given.
Learn more about exponentiation here:
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The complete question is;
List all the rules of exponentiation.
Is the area of a square with side length 2 inches greater than or less than the area of a circle with radius 1.2 inches?
Answer:
less
Step-by-step explanation:
We can answer the question about relative sizes of a square and a circle by finding the area of each.
__
The area of the square is ...
A = s²
A = (2 in)² = 4 in²
The area of the circle is ...
A = πr²
A = π(1.2 in)² = 1.44π in² ≈ 4.524 in²
The area of the square is less than the area of the circle.
_____
Additional comment
The area of a circle is π/4 times the area of the square in which it is inscribed. If the diameter of the circle is 1.2 times the side length of the square, its area ratio to the square will be (1.2²)(π/4) = 0.36π ≈ 1.13. That is, the circle is larger and the square is smaller.
If two angles are a linear pair, then they add to equal 180
Are they functions or not ?
Answer:
no
Step-by-step explanation:
The company also wants to offer a family size box of cereal. The family size box will be a dilation of the single serving 1. 2-ounce box. It must contain 18. 75 ounces of cereal. What scale factor does the company need to use for the family size box?.
Answer:
2.5
Step-by-step explanation:
The relative volumes of the two similar boxes will be related by the cube of the dilation factor. That means the dilation factor (d) satisfies ...
1.2d³ = 18.75
d³ = 15.625 . . . . . divide by 1.2
d = 2.5 . . . . . . . . take the cube root
The scale factor the company needs to use is 2.5.
1. The value x = 4 is a solution to all of the following equations except which?
(1) 2x + 7 = 15
(3) x+5= 3x-3
(2) 3(x+1) = x+11
(4) x+12 = 5x - 2
Answer:
(4) x+12=5x-2
Step-by-step explanation:
Substitute x=4 in all the options to check equality
Answer:
Your answer is: 4) x+12=5x-2
Step-by-step explanation:
Hope this helped : 0
The side accross the right angle is called the
hypotenuse
leg A
leg B
Step-by-step explanation:
I think you mean opposite. If so, then hypotenuse is the answer.
1 .9 times 42 .5
More questions to come
Answer:
80.75
Step-by-step explanation:
please answer with steps
question down below
Answer:
[tex]k = 9\frac{3}{5},\: k = - 8[/tex]
Step-by-step explanation:
[tex] |5k - 4| + 2 = 46 \\ \\ \implies \: |5k - 4| = 46 - 2 \\ \\ \implies \: |5k - 4| = 44 \\ \\\implies \: 5k - 4 = \pm \: 44 \\ \\\implies \: 5k - 4 = 44 \: \: or \: \:5k - 4 = - 44 \\ \\\implies \: 5k = 44 + 4 \: \: or \: \:5k = - 44 + 4\\ \\\implies \: 5k = 48 \: \: or \: \:5k = - 40\\ \\\implies \: k = \frac{48}{5} \: \: or \: \:k = \frac{ - 40}{5} \\ \\\implies \: k = 9\frac{3}{5} \: \: or \: \:k = - 8\\ \\[/tex]
Chase a has locker that is 2 ft. Wide, 2 ft. Deep, and 5 ft. High. How many boxes of fundraising candy can he fit into his locker if each box is 1 ft. 3 in volume? A. 9 boxes of candy B. 10 boxes of candy C. 20 boxes of candy D. 25 boxes of candy
Answer:
the aswer is 20
Step-by-step explanation:
2x2=4x5=20
i hope this helps anyone and everyone
The graph shows the distance covered by a runner after a given number of hours.
The runner travels
✔ 8
miles in 2 hours.
The runner’s speed is
miles per hour
If the runner travels 8 miles in 2 hours then the speed of the runner is 4 miles per hour.
The runner traveled 8 miles in 2 hours.
To find the runner's speed, we can use the formula:
Speed (in miles per hour) = Distance / Time
In this case, the distance is 8 miles and the time is 2 hours:
Speed = 8 miles / 2 hours
= 4 miles per hour
So, the runner's speed is 4 miles per hour which means that the runner covers a distance of 4 miles for every hour they run.
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Which two line segments represent the legs?
Answer:
WX and XY
Step-by-step explanation:
the legs are usually not the side opposite the right angle (Hypotenuse)
Use the substitution method to solve the problem.
10. y = 3x -34
y = 2x -5
14. y = -3x + 4
-6x -2y = -8