Please help me with this question, no links please, thank you!!!

A school has all of the students in grade 7 take a spelling test. Several samples are taken from the results. Which of the following samples is NOT likely to produce a representative sample of the population?

Group of answer choices

20 students who have science first period.

3 students who were in the final round of the spelling bee.

15 students whose name begins with N.

40 students who say math is their least favorite subject.

Answers

Answer 1

Answer:

15 students whose name begins with N

Step-by-step explanation:

This is not a valid representative sample.


Related Questions

What is the probability of randomly choosing a white marble from a bag of
12 red, 12 white, 12 blue and 12 green marbles?
1/2
1/3
O 1/4
1/8

Answers

Answer:

1/4

Step-by-step explanation:

if there are 12 white marbles

and there are 48 in total

you have a probability of picking one 12/48

if you simplify this, you get 1/4!

viola!

hope this helped!

Answer:

1/4

Step-by-step explanation:

if there are 12 white marbles

and there are 48 in total

you have a probability of picking one 12/48

if you simplify this, you get 1/4!

hope this helped!

How do I solve 8/x-0.16=0.64

Answers

Answer:

yo my bad

x=10 the other person solved it

Answer:

x=10

Step-by-step explanation:

8/x=0.8

8=0.8x

x=10

I need help with other question b, with explanation please

Answers

Answer:

[tex]96 - 14[/tex]

Step-by-step explanation:

Given

[tex]Digits: 6\ 1\ 9\ 4[/tex]

Required

Fill in the blanks to get the largest subtraction

The largest subtraction is the difference between the highest possible value and the least possible value.

From the 4 given digits.

We have:

[tex]Highest = 96[/tex]

[tex]Least = 14[/tex]

So, the blanks become:

[tex]96 - 14[/tex]

And the difference is:

[tex]82[/tex] --- possible largest

At what age can you start withdrawing money from retirement accounts? What’s the penalty for withdrawing money early from retirement accounts? Type the correct answer in each box. Use numerals instead of words. Use / for a fraction bar.

Answers

The penalty-free withdrawals from retirement accounts after age 59 ½ requires withdrawals after age 72 and 10% penalty on the amount that you withdraw before the age 59 ½.

We need to find at what age can you start withdrawing money from retirement accounts.

We need to find what’s the penalty for withdrawing money early from retirement accounts.

You can withdraw money from your 401k before age 59 ½. However, early withdrawals often come with hefty penalties and tax consequences.

If you find yourself needing to tap into your retirement funds early, here are rules to be aware of and options to consider.

What are 401k Withdrawal Rules?

The IRS allows penalty-free withdrawals from retirement accounts after age 59 ½ and requires withdrawals after age 72. There are some exceptions to these rules for 401k plans and other qualified plans.

Generally, if you take a distribution from an IRA or 401k before age 59 ½, you will likely owe:

federal income tax (taxed at your marginal tax rate)10% penalty on the amount that you withdrawrelevant state income tax

Therefore, the penalty-free withdrawals from retirement accounts after age 59 ½ requires withdrawals after age 72 and 10% penalty on the amount that you withdraw before the age 59 ½.

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What are the coordinates of point A?
1.(5,2,0)
2.(5,0,2)
3.(0,2,5)
4.(2,0,5)

Answers

The coordinates of point A are (2, 0, 5).

Then the correct option is the fourth one.

How to get the coordinates of point A?

The general notation for a point on 3 dimensions is (x, y, z).

First, notice that the vertical axis is the Z-axis, the axis that points towards us is the x-axis, the axis that points to the right is the y-axis.

First, we can see that the x-value of A is x = 2.

The z-value of A is z = 5.

And A lies on the plane x_z, then the y-value is y = 0.

Then the coordinates of point A are (2, 0, 5).

So the correct option is 4.

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WILL NAME BRAINLIST PLEASE
Use the table to write a linear function that relates y to x . PLEASE NO HACKERS
y=

Answers

Answer:

x = -4y

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

Mr. Sanchez built a fence to enclose a rectangular
yard for his horse. If the area of the yard to be
enclosed is 2835 square feet, and the length of
the yard is 45 feet, how much fencing is needed?

Answers

9514 1404 393

Answer:

  216 feet

Step-by-step explanation:

The area is given by the formula ...

  A = LW

Solving for width, we have ...

  W = A/L = 2835 ft²/(45 ft) = 63 ft

__

The perimeter is given by the formula ...

  P = 2(L +W)

  P = 2(45 ft +63 ft) = 2(108 ft)

  P = 216 ft

216 feet of fencing are needed to enclose the area.

Andy's age is 67, which is 17 less than 12 times bills age. What is bills age?

Answers

Bill is about 49 years old.

Answer:

7

Step-by-step explanation:

67 + 17 = 84

84/12 = 7

Find the distance to the nearest tenth
between the points (-4, 2) and (6, -3) on
the coordinate plane.

Answers

Answer:

d=11.2

Step-by-step explanation:

[tex]d=\sqrt{(x2-x1)^{2}+(y2-y1)^{2} \\ }[/tex]

[tex]d=\sqrt{(6-(-4)^{2}+(-3-2)^{2} }[/tex]

[tex]d=\sqrt{10^{2}+5^{2} }[/tex]

[tex]d=\sqrt{100+25}[/tex]

[tex]d=\sqrt{125}[/tex]

[tex]d=11.18[/tex]

[tex]d=11.2[/tex]

Can a triangle be made using the side lengths of 8, 2, 10?

a
Yes.
b
No, the sum of the shortest sides measures less than the longest side.
c
No, the sum of the shortest sides measure is equal to the longest side.

Answers

Answer:

c

Step-by-step explanation:

I'm not completely sure if this is right, but i hope it is :/

I believe it’s c i hoped this helped

....................

Answers

Answer:

11

Step-by-step explanation:

The area of a right triangle is 36 square
meters. The height is twice as long as
the base.
To find the area of a triangle, use the
1
following formula:a bh
2
where b is the base and h is the height.
How long is the shorter leg of the triangle?

Answers

Base is 12 and height is 24

Answer:

6 m

Step-by-step explanation:

36 m^2 = bh/2

36·2 = bh/2·2

72 = bh

72 = 12·6

check

36 m^2 = 12·6/2

36 = 36

:)

A density graph for all of the possible temperatures from 60 degrees to 160 degrees can be used to find which of the following?

A.The probability of a temperature from 30 degrees to 120 degrees
B.The probability of a temperature from 90 degrees to 180 degrees
C.The probability of a temperature from 30 degrees to 90 degrees
D.The probability of a temperature from 90 degrees to 120 degrees

Answers

Answer: 90 degrees to 120

Step-by-step explanation:

The probability of a temperature from 90 degrees to 120 degrees.

What is Probability?

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.

Probability(Event) = Favorable Outcomes/Total Outcomes = x/n

Experiment: A trial or an operation conducted to produce an outcome is called an experiment.

Sample Space: All the possible outcomes of an experiment together constitute a sample space. For example, the sample space of tossing a coin is head and tail.

Favorable Outcome: An event that has produced the desired result or expected event is called a favorable outcome. For example, when we roll two dice, the possible/favorable outcomes of getting the sum of numbers on the two dice as 4 are (1,3), (2,2), and (3,1).

Trial: A trial denotes doing a random experiment.

Given:

Temperatures from 60 degrees to 160 degrees.

As, per the situation the probability will lie between 60 degree to 160 degree.

Hence, The probability of a temperature from 90 degrees to 120 degrees.

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Tyra's kitchen is 42 m wide and 6.3 m long. She is pasting a decorative border strip that costs $5.95 per meter around the top edge of all the walls. How much will she spend?

Answers

Answer:

$124.95

Step-by-step explanation:

The length of the strip is equal to perimeter of the kitchen.

P = 2(4.2 + 6.3) = 21 m

Cost of the strip is:

21*$5.95 = $124.95

ASAP SHOW WORK PLEASE

Answers

Answer:

1) 5 in, 12 in, 13 in

Step-by-step explanation:

1)

5² + 12² = 13²25 + 144 = 169169 = 169Yes

2)

5² + 7² = 9²25 + 49 = 8174 ≠ 81No

3)

10 + 12 < 30, there is no possible triangle with given sides as per triangle inequality theorem

someone please answer this!!

Answers

Answer:

4m is the answer.

Step-by-step explanation:

a = 3m

b = ?

c = 5m

According to the Pythagoras theorem,

a² + b² = c²

3² + b² = 5²

9 + b² = 25

b² = 25 - 9

b² = 16

b = 4m

∴ The distance between the ladder and the bottom of the slide is 4m.

There are 10 red apples and 12 green apples in a basket. If Vinta randomly selects 3 apples from
the basket, what is the probability they will all be green apples?

Answers

Answer: 1/7

Step-by-step explanation: 12/22 • 11/21 • 10/20

The probability they will all be green apples is 0.142 if there are 10 red apples and 12 green apples in a basket.

What is probability?

It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

As we know,

A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.

It is given that:

There are 10 red apples and 12 green apples in a basket. If Vinta randomly selects 3 apples from the basket.

Total outcomes = number of ways of selecting fruits in the basket

Total fruits = 10 + 12 = 22

Total number of outcomes = C(22, 3) = 1540

Total number of favourable outcomes = C(12, 3) = 220

Probability = 220/1540

Probability = 0.142

Thus, the probability they will all be green apples is 0.142 if there are 10 red apples and 12 green apples in a basket.

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4x^2+5y^2=41
3x^2-4y^2=23

Answers

Answer:

i dont know the answer sry

Step-by-step explanation:

srryyy

what is the value of 5 in (and the three on the top​

Answers

Answer:

5^3 = 125

Step-by-step explanation:

5^3

5 x 5 x 5

=125

Answer:

[tex]5^{3} = 125[/tex]

Step-by-step explanation:

Mark me brainllest

The mean of a set of credit scores is Mu = 690 and Sigma = 14. Which statement must be true?

Answers

Answer:

B

Step-by-step explanation:

Answer: It’s C

Step-by-step explanation:

Find the value of x. Round to the
nearest tenth.
26
12
х
X=
= [?]

Answers

Answer:

X = 5.9 (in degree mode)

Step-by-step explanation:

Do the following:

12(tan26) = X

Plugging this into a calculator, you will get:

X = 5.9 (in degree mode)

PLEASE HELP ME!!
For the following exercise, use the compound interest formula, A(t) = P(1 +r/n)^t.
where money is measured in dollars.
After a certain number of years, the value of an investment account is represented by the expression 10,400(1 +0.02/2)^20
had the account been accumulating interest?

How many years

Answers

Answer:

A = $10,441.68

A = P + I where

P (principal) = $10,400.00

I (interest) = $41.68

Step-by-step explanation:

First, convert R as a percent to r as a decimal

r = R/100

r = 0.02/100

r = 0.0002 rate per year,

Then solve the equation for A

A = P(1 + r/n)nt

A = 10,400.00(1 + 0.0002/2)(2)(20)

A = 10,400.00(1 + 0.0001)(40)

A = $10,441.68

Summary:

The total amount accrued, principal plus interest, with compound interest on a principal of $10,400.00 at a rate of 0.02% per year compounded 2 times per year over 20 years is $10,441.68.

The total amount , with compound interest on a principal of $10,400.00 at a rate of 0.02% per year compounded 2 times per year over 20 years is $10,441.68.

What is Compound interest?

Compound interest is a method of calculating the interest charge. In other words, it is the addition of interest on interest.

Compound Interest =[tex]P(1+r/n)^rt[/tex]

Given that

A = $10,441.68

A = P + I

P (principal) = $10,400.00

I (interest) = $41.68

First, we need to convert R as a percent to r as a decimal

r = R/100

r = 0.02/100

r = 0.0002 rate per year,

Then we will solve the equation for A

A = [tex]P(1+r/n)^rt[/tex]

[tex]A = 10,400.00(1 + 0.0002/2)^{(2)(20)}[/tex]

A = 10,400.00(1 + 0.0001)

A = $10,441.68

Hence, The total amount , with compound interest on a principal of $10,400.00 at a rate of 0.02% per year compounded 2 times per year over 20 years is $10,441.68.

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A diner sells large drinks for 3$ and small drinks for 2$. Last month, they sold 420$ of the large size. How many large size drinks were sold last month?

Answers

ANSWER: 140 drinks
EXPLANATION: 420=3x
(x being the number of large drinks sold)

Answer:

140 Large sized drinks were sold last month

Step-by-step explanation:

Each large drink is sold at $3

Therefore, we divide the amount of money which is $420 by $3

  = $420 ÷ $3 = 140 Large sized drinks

Anyone know the answer to this question?

Answers

Use 3.14*13^2 is your answer please give brainliest!

help please and explain (no links and random answers for points)

Answers

Answer:

No 2 answer is 6\8 i.e 3\4 for the one eaten and 2\8 i.e 1\4 for the left over

Which expression is equivalent to 6x-9•3

Answers

An expression could be 3(2x+9)

Determine another point on the line given two points on the line. (-2, 9), (2, -1)

Answers

Answer:

(4,-6)  

Step-by-step explanation:

1) First, let's find the slope of the line between the two points. Use the slope formula [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex], substitute the x and y values of (-2,9) and (2,-1) into it, then solve:

[tex]m = \frac{(-1)-(9)}{(2)-(-2)}\\m = \frac{-1-9}{2+2} \\m =\frac{-10}{4} \\m = -\frac{5}{2}[/tex]

So, the slope of the line is [tex]-\frac{5}{2}[/tex].

2) Now, using that slope, let's find another point on the line. You can do this by drawing the two points on a graph (picture below). Now, remember that the slope is [tex]\frac{rise}{run}[/tex]. So, starting from any of the two points (I chose (2,-1), as seen below) count 5 units down, then 2 units to the right. This gives an answer, (4,-6).

In August 2003, 56% of employed adults in the United States reported that basic mathematical skills were critical or very important to their job. The supervisor of the job placement office at a 4-year college thinks this percentage has increased due to increased use of technology in the workplace. He takes a random sample of 30 employed adults and finds that 21 of them feel that basic mathematical skills are critical or very important to their job.

Required:
Is there sufficient evidence to conclude that the percentage of employed adults who feel basic mathematical skills are critical or very important to their job has increased at the a = 0.05 level of significance?

Answers

Answer:

Yes

Step-by-step explanation:

First, suppose that nothing has changed, and possibility p is still 0.56. It's our null hypothesis. Now, we've got Bernoulli distribution, but 30 is big enough to consider Gaussian distribution instead.

It has mean μ= np =  30×0.56=16.8

standard deviation s = √npq

sqrt(30×0.56×(1-0.56)) = 2.71

So 21 is (21-16.8)/2.71 = 1.5494 standard deviations above the mean. So the level increased with a ˜ 0.005 level of significance, and there is sufficient evidence.

Which is the graph of f(x)=4(1/2)x

Answers

Answer:

here's the graph

Step-by-step explanation:

Someone please explain this andwer

Answers

Answer: 2756 cubic inches

Step-by-step explanation:

Well, first calculate the rectangular prism: 11 x 11 x 16 = 2304

Then the cylinder: pi x 4(sqrd) x 9 = about 452

then add them together

I hope this helps! :)

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