The best description of a random sample for Kiera's middle school survey to determine the winter dance theme is option D: Fifty randomly selected 7th graders are surveyed.
What is random sampling?Random sampling is a technique for picking a sample from a population in such a manner that each possible sample has a preset probability of being chosen.
As per the question, the sample should be representative of the entire student population, so selecting fifty students from each grade (option B) or all the students in Mrs. Jackson's class (option A) may not be representative of the entire student population.
Similarly, selecting fifty randomly selected staff members (option C) may not be representative of the student population.
Therefore, option D is the best choice as it randomly selects students from the population of interest.
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Alex buys 24 apples from the supermarket. When he gets home, he finds that 6 apples are bad. What percentage of the apples are bad? Round your answer to the nearest number. whats the correct formula for it?
Answer:
25%
Step-by-step explanation:
Since there are 24 apples, and 6 are bad, to find the percentage of the bad apples, you do bad apples/total apples
6/24=.25
0.25 is 25%
Arjun earned $36 515 in 2019.
This was an increase of 9% on his earnings in 2018.
Work out his earnings in 2018.
Answer:
33500
Step-by-step explanation:
Let x= his wage in 2018
we know that
1.09*x= 36515
Solve for x (by dividing both sides by 1.09)
get 33500
Can someone help me with this 4 - 3m > -5
Answer: M < -3
.................................................
Step-by-step explanation:
4 - 3m > -5
4 - 3m > (-4 -5)
3m > -9
(3/3)m > (-9/3)
m<-3
On a number line, 6.26 would be located... choose all answers that make a true statement
A) between 6.25 and 6.27
B) to the right of 6.24
C) between 6.2 and 6.3
D) to the left of 6.21
Answer: A
Step-by-step explanation:
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If f(x) = x2 - x, what is f(-3)?
Answer:
Step-by-step explanation:
Putting value of x = - 3 in the equation
f(x) = x2 - x
f(-3) = (-3)^2 - (-3)
= - 9 + 3
= - 6
Anthony is going to invest in an account paying an interest rate of 7%
compounded continuously. How much would Anthony need to invest,
to the nearest cent, for the value of the account to reach $238,000 in
13 years?
Answer:
95800.77
Step-by-step explanation:
Answer:
95800.77
Step-by-step explanation:
Please helpp
Extra points and brainleist
Answer:
D
(x+3)^2=4(x+3)(x+3)=4x^2+3x+3x+9=4x^2+6x+9=4x^2+6x=4-9x^2+6x=-5x^2+6x+5=0Bab needs help please ☹️
Answer:the area is 28.27
Step-by-step explanation:
im just that good
I’m giving brainliest to correct answer
Answer: 4 3 2 1 anything less than 5
Step-by-step explanation:
Answer:
X has to be bigger than 2 and smaller than 12
Step-by-step explanation:
For a triangle to be possible no side can be bigger than the sum of the other two.
Since 5 + 7 = 12, x has to be smaller than 12.
Since x + 5 => 7, x has to be bigger than 2.
Both conditions written:
2>X>12
Can someone help me with this
I need help finding the missing value to this equation
-4x - y = 24
(__, 8)
Answer:
x=-8
Step-by-step explanation:
-4x-(8)=24
+8=+8
-4/-4x=32/-4
x=-8
A spinner has 4 equal sections. After spinning the spinner 15 times, the results are recorded in a table. Which of the given statements is true?
A. The theoretical probability of landing on violet is 1/3.
B. The experimental probability of landing on red is 1/5.
C. The experimental probability of landing on yellow is 1.
D. The theoretical probability of landing on orange is 1/5.
The true statement would be A. The theoretical probability of landing on violet is 1/3.
What is theoretical probability?Probability which is derived theoretically, irrespective of what outcome comes, is called theoretical probability.
Probability which is based on the outcomes of experiments performed is called experimental probability.
Suppose we want to find the probability of an event E.
Then, its probability is given as
[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text{Number of total cases}} = \dfrac{n(E)}{n(S)}[/tex]
where favorable cases are those elementary events that belong to E, and total cases are the size of the sample space.
A spinner has 4 equal sections. After spinning the spinner 15 times, the results are recorded in a table.
The true statement would be A. The theoretical probability of landing on violet is 1/3.
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students will randomly select a tile from a bag containing one red, one yellow, one blue and one green tile. and then roll a cube with faces numbered 1 through 6.
what is the probability that a student
A. draws a red or yellow tile and
B. rolls a number between 1 and 3.
answer as a percentage, to the nearest percent.
thanks for any help available!
Answer: 25 PERCENT
Step-by-step explanation:
Answer:
25%
Step-by-step explanation:
There are 4 colors, probability of red or yellow:
P(red or yellow) = 2*1/4 = 1/2
And a cube faces 1 to 3:
P(1 to 3) = 3*1/6 = 1/2
Probability of the two events above:
1/2*1/2 = 1/4 = 25%
If f (x) = 8(5x-2) find f -1 (x).
Step-by-step explanation:
f(x)=8(5x-2)
interchanging the role of x&y
x=8(5y-2)
x=40y-16x+16=401yy=(x+16)/40f-1(x)=(x+16)/10
stay safe healthy and happy.The value of [tex]f^{-1}(x)[/tex] for the given function f(x) = 8(5x - 2) will be [tex]f^{-1}(x)[/tex] =(x + 16)/40.
What is the inverse of a function?A function's inverse can be thought of as a reverse of the function.
For instance, if y = f(x), then x = f will be the inverse (y).
It implies that we must swap x and y in the inverse function.
As per the given,
f(x)=8(5x-2)
Interchange the variable y and x as,
⇒ x = 8(5y - 2)
⇒ x+16=401y
⇒ y = (x+16)/40
Put y = [tex]f^{-1}(x)[/tex]
[tex]f^{-1}(x)[/tex] =(x + 16)/40
Hence "The value of [tex]f^{-1}(x)[/tex] for the given function f(x) = 8(5x - 2) will be [tex]f^{-1}(x)[/tex] =(x + 16)/40".
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Solve for x. For your answer,
Answer:
17
Step-by-step explanation:
2x + 5 + 3x + 90 = 180, 5x=85, x=17
Which number is included in the set of integers that when added to 24 gives a sum of less than zero? Select all that apply.
7
-2
4
3
0
9
Answer:
immma send you the link friend me on hereStep-by-step explanation:
I NEED HELP ASAP IM TRYING TO STUDY FOR MY STAAR TEST TOMORROW *NO LINKS ALLOWED*
Answer:
C
Step-by-step explanation:
equations for each:
A) y - x = 25
B) y = 25x
C) x = 25y
D) y = 25 + x
Awnser and show your work <3
Answer:
Team A: 25 players
Team B: 24 players
Step-by-step explanation:
Team A:
to find the total # of players of the team we need to set up a fraction. 5 out out of an unknown number of players is equal to 1/5, so we set it up as:
[tex]\frac{5}{x} = \frac{1}{5}[/tex]
then we cross multiply to get
x*1 = 5*5
x=25 players
Team B
similarly to Team A
[tex]\frac{3}{x} = \frac{1}{8}[/tex]
cross multiply to get
x*1=3*8
x= 24 players
What is the answer to this geometry question?
Answer:
88cm^3
Step-by-step explanation:
The volume of a pyramid is the base times height divided by 3. First, we can find the area of the base. We have a right triangle with a base of 8 and a height of 6. The area of a triangle is the base times height divided by 2. This gives us:
8 * 6 ÷ 2 = 24cm^2
We can see that 11cm is the height as it is perpendicular to the base. We can set up an expression from the formula mentioned at the beginning:
11 * 24 ÷ 3 = 88cm^3
Solve: 4(3x - 2) = 8(x - 8)
Giving 10 points for correct answer !!!
Answer:
12x-8 ______
Step-by-step explanation:
The second bit, I have no clue. But the first is just simplifying in algebra.
what value of x makes this equation true? 3x - 20 = -2x
Answer:
x = 4
Step-by-step explanation:
3x - 20 = -2x
Add 2x to both sides.
5x - 20 = 0
Add 20 to both sides.
5x = 20
Divide both sides by 5.
x = 4
Answer:
X = 4
Step-by-step explanation:
please help me I’m begging you :)
Answer:
4
Step-by-step explanation:
Find the 35th term 12,20,28,
Answer:
284
Step-by-step explanation:
HI could some one pleaseeee HELP ME !!!
Answer:
The answer is 48
Step-by-step explanation:
Substrac 180-132 and that's the answer
3. Solve: 3(x + 3) > 4(x - 4) A. x > 25 B. x < 25 C. X > - 7 D. x < -7
explain
Answer:
B.x<25
Step-by-step explanation:
Let's solve your inequality step-by-step.
3(x+3)>4(x−4)
Step 1: Simplify both sides of the inequality.
3x+9>4x−16
Step 2: Subtract 4x from both sides.
3x+9−4x>4x−16−4x
−x+9>−16
Step 3: Subtract 9 from both sides.
−x+9−9>−16−9
−x>−25
Step 4: Divide both sides by -1.
−x/ −1 > −25/ −1
x<25
Answer:
x<25
A cow is tethered with a rope 20 m long. What is the maximum area the cow can graze? with a decimal
Find an equivalent expression for parts (a) and (b).
a. 2x + 10x
b. 2(x – 4) + x
DO NOT GIVE ME A LINK TO THE ANSWER
Answer:
Step-by-step explanation:
a) 8x + 4x
b) 3x -8
What is equivalent to square root of 2 over 2? Select all that apply
Answer:
The answer is 2.
Step-by-step explanation:
Find the area of triangle ABC.
Answer:
ans no b if you will apply the formula
Step-by-step explanation:
i think it's no b
Answer:
222.33 ft^2
Step-by-step explanation:
The formula to find the area of a triangle with two sides and an included angle is:
A=[tex]\frac{1}{2}[/tex]absin(C),
where a and b are the two sides and C is the angle in between.
Area=[tex]\frac{1}{2}[/tex]*32*19*sin(47)≈222.33
222.33 ft^3
PLSSSSSSSSSSS ANSWER FASSTTT!!!!!!
Answer:
the only solution is 0
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
2(x+3)=2x+6
Multiply 2 with the numbers in the parenthesis
2x+6=2x+6