A school principal wants to find out what the students think about the teaching
quality in the school. Which of these samples is unbiased?

Answers

Answer 1
You didn't show the full question

Related Questions

1900 is deposited into a savings account. Interest is compounded annually. After 1 year, the value of the account is 1957. After 2 years, the value of the account is 2015.71. This scenario can be represented by an exponential function of the form f(x)=1900(b)^2 , where is the amount in the savings account, and x is time in years. What is the value of b?

Answers

Answer:

1.03

Step-by-step explanation:

2015.71 = 1900(b)^2

44.896659 = 43.588989 * b

44.896659/ 43.588989 = b

1.0300000 = b

Recall ; for an exponential distribution :

b In the equation = 1 + r ; where, r = rate

b = 1 + r

1.0300000 = 1 + r

r = 1.0300000 - 1

r = 0.03

Hence, the value of b in the equation is 1.03

Edge! 15 pts! PLEASE HURRY! Which is a diagonal through the interior of the cube?
A cube. The top face has points A, B, D, C. The bottom face has points E, F, H, G.
Side A H
Side B E
Side C H
Side F G

Answers

Answer:

Side AH

Step-by-step explanation:

he other 3 sides only go through one face of the cube

Answer:

s√3

Step-by-step explanation:

Draw in the diagonal of the base, which is the line freom G to F.  If the side length of this cube is s, then the length of this diagonal is

d = √(s² + s²) = (√2)s.

Now draw in the diagonal of the cube:  draw a line segment from G to B.  We have already found that the length of the diagonal GF is d = s√2.  Apply the Pythagorean Theorem to the triangle whose sides are s√2 and s:

diagonal of cube = square root of the sum of the squares of s√2 and s:

= √(2s² + s²)= √(3s²) = s√3

1)
Orange-Gi
Gina is buying 24 oranges. Two stores offer the following deals:
Store A: 12 oranges for $6.48
Store B: 5 oranges for $2.65
Gina can buy oranges individually.
How much will Gina save if she buys 24 oranges at Store B?
Show your work
Please help meeee
I will give u 14 points

Answers

Answer:

She will save 1.24

Step-by-step explanation:

2.65 x 4 10 .60 plus .53 x 4 equals 12.72

6.48 x 2 equals 13.96

What flavor of ice cream would you pick?
Chocolate Vanilla Neither
Children
40
Teens 12
16
45
Adults 55
54
22
15
10
The table shows the results of a survey on the preferred flavor of ice cream. Based on this survey, what is the probability that an adult
prefers chocolate ice cream?
A)
55
52
B)
55
54
c)
55
107
D)
55
119

Answers

Answer:

I'm pretty sure the answer is C

I could be wrong tho

Help me please! This is due today!​

Answers

Answer:

the question is fillped i can not see the questions

Step-by-step explanation:

The Town Theater receives $4212 by selling 465 tickets to
the opening night of the revue. If the full price of a ticket is $10.00
and discount tickets for students and seniors are $8.00 each, how
many discounted senior/student tickets were sold?

Answers

Answer:

219

Step-by-step explanation:

let x be the number of full price tickets and y be student/ senior number , then

x + y = 465 → (1)

10x + 8y = 4212 → (2)

Multiplying (1) by - 10 and adding to (2) will eliminate x

- 10x - 10y = - 4650 → (3)

Add (2) and (3) term by term to eliminate x

0 - 2y = -438

- 2y = - 438 ( divide both sides by - 2 )

y = 219

The number of senior/ student tickets sold was 219

Jack and charlie each deposit $17,250 into accounts that earn 6% interest for 6.5 years. Jacks account earns annual compound interest. Who will earn more interest after 6 years, and how much more interest will they earn?

Answers

From the amounts found using simple and compound interest formulas, we found that Carlie earns more interest than Jack by $1009.45.

What is the difference between simple and compound interests?

Simple interest is based on the principal amount, which is the main distinction between it and compound interest. Contrarily, compound interest is calculated using the principle sum and interest that has been compounded over the course of a period. Simple interest is a predetermined proportion of the principal amount borrowed or lent that is paid or received over a set period of time. Borrowers are required to pay interest on interest in addition to principal since compound interest accrues and is added to the accrued interest from prior periods.

The complete question is given below.

Given,

  The principal amount deposited by both Jack and Carlie  P = $17,250

The rate of interest r = 6% = 0.06

The time period = 6.5

Jack's account earns annual simple interest and Carlie's account earns annual compound interest.

So the amount in each person's account after a time period of t = 6 years.

Jack:

Amount = P(1+rt) = 17250 ( 1 + 0.06*6) = $23,460

Carlie:

number of times compounded in a year n = 1

Amount = [tex]P(1 + \frac{r}{n})^{nt}[/tex] = 17250 ( 1+0.06)⁶ = $24,469.45

Therefore from the amounts found using simple and compound interest formulas, we found that Carlie earns more interest than Jack by $1009.45.

To learn more about the interest, follow the link.

https://brainly.com/question/25720319

#SPJ1

(28 divided 7 + 6 divided 3) x 1/2

Answers

Answer:

3

Step-by-step explanation:

28/7=4

6/3=2

4+2=6

6*1/2=3

Paraenthies

Exponets

Mulitplication

Divide

Add

Subtract

Find the interest rate for a bank account that earned $81.60 in interest over 4 years and that had a principal of $510

Answers

Answer:

[tex]si = \frac{p \times t \times r}{100} \\ 81.60 = \frac{510 \times 4 \times r}{100} \\ 8160 = 2040r \\ r = \frac{8160}{2040} \\ r = 4\%[/tex]

A triangle has angle measurements of 44 degrees,87 degrees, and 49 degrees. What kind of triangle is it? acute,right, and obtuse.

Answers

i think it should be obtuse but i am not sure

If a / b = 2 / 5 , then , b / a = 5 / 2

True
False

Answers

Answer:

false

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Brionna bought a house for $300,000 in 2000. Unfortunately, the market is not doing so hot and each year she loses $2,000 in value. If she decides to sell in 2012 how much will her house be worth?

Answers

Her house will be worth 276,000 I think

x+2y+1=0,2x-3y-12=0 solve by substitution method​

Answers

Answer:

Step-by-step explanation:

x=-1-2y

-2-4y-3y-12=0

-7y=14

y=-2

x=3

Help me ‍♀️
Hehdhxjjbduc eirbdudbdu

Answers

Answer:

slope = 1

y - intercept = (0.-4)

how do I solve this and what steps do I take to solve it

Answers

Answer:

122.46 mi^2

Step-by-step explanation:

IF ans is correct comment back for explanation

I need this answer as soon as possible

Answers

2(15) + 2(2x + 3) would be the perimeter equation

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Answers

Answer:

V = 612.3

Step-by-step explanation:

d = 6

r = 3

Volume of a cylinder:

V = πr²h

V = 3.14(3²)(20)

V = 3.14(9)(20)

V = 565.2

Volume of a cone:

V = πr²(h/3)

V = 3.14(3²)(5/3)

V = 3.14(9)(5/3)

V = 47.1

Combined:

565.2 + 47.1

612.3

Find the slope of the line through the points (10,-6) and (-1,8)

Answers

Answer:

m=-14/11

Step-by-step explanation:

To find the slope use the formula: y2-y1/x2-x1

(8--16)/(-1-10)

14/-11

=-14/11

This is my question for now

Answers

Answer:

V = 540cm3 (E)

Step-by-step explanation:

Area of a square:

A = a2

Perimeter of a Square

P = 4a

Polygon diagonals of a square

q = √(2a2) = a√2

Side of a Square

a = √A

a = P/4

a = q / √2

Square Calculations

Calculate q, P, A | Given a

Given the length of a side calculate the diagonal, area and perimeter

q = a√2

A = a2

P = 4a

Calculate a, P, A | Given q

Given the diagonal length calculate the side length, perimeter, and area

a = q / √2

P = 4a

A = a2

Calculate a, q, A | Given P

Given the perimeter calculate the side length, diagonal, and area

a = P/4

q = a√2

A = a2

Calculate a, q, P | Given A

Given the area calculate the length of the sides, diagonal, and the perimeter

a = √A

q = a√2

P = 4a

Luis puts $2,500 into an account that earns 5% interest per year for 3 years. Find the amount of interest earned on the account

Answers

Answer:

$375

Step-by-step explanation:

Given data

Principal= $2500

Rate= 5%

TIme = 3 years

We know that the expression for the simple interest is given as

SI=PRT/100

Substitute

SI= 2500*5*3/100

SI= 37500/100

SI= $375

To serve 1 person at a local restaurant, it takes 10 minutes. To sene 5 people, it takes 18 minutes. Write and solve an equation to find the number it will take to serve a party of 8.​

Answers

Answer:8x5=10-x

Step-by-step explanation:

PLEASE HELP ASAP WILL GIVE BRAINLIST

Answers

Answer:

21 degrees

Step-by-step explanation:

The inscribed angle theorem states that when two cords (lines in a circle) make contact with the circumference of the circle (outer edge), and the two cords do not pass through the center of the circle, then the angle between the two cords is equal to half of the length of its surrounding arc. This means that the measure of arc (WV) is half of the measure of angle (WXV). Therefore, one can form an equation and solve for the length of the arc (WV).

2 (WV) = (m<WXV)

Substitute,

2 (WV) = (42)

Inverse operaitons,

2 (WV) = (42)

/2            /2

(WV) = 21

Solve each equation. List any restrictions. Check your solutions.
12/x+11=17

Answers

12+11x=17x11x+12=17x
(both sides of the equation)
11x+12−17x=17x−17x
(Subtract 17x from both sides)
−6x+12=0−6x+12−12=0−12
(Subtract 12 from both sides)
−6x=−12−6x−6=−12−6
(Divide both sides by -6)
x=2
Check answers. (Plug them in to make sure they work.)
x=2
(Works in original equation)

8.2.AP-7
B
Find the measure of side c.
a = 26 m
C
C=
m (Round the answer to the nearest whole number.)

Answers

Answer:

c ≈ 40

Step-by-step explanation:

Using the sine ratio in the right triangle

sin40° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{26}{c}[/tex] ( multiply both sides by c )

c × sin40° = 26 ( divide both sides by sin40° )

c = [tex]\frac{26}{sin40}[/tex] ≈ 40 ( to the nearest whole number )

A tourist standing on the New York City coast sees the Statue of Liberty, which is 305 feet tall. She must tilt her head 9 degrees upwards to look at its head. How far away is she from the base of the statue? Round your answer to the nearest whole foot.

Answers

Given:

Height of the Statue of Liberty = 305 feet

Angle of elevation = 9 degrees

To find:

The between the tourist and the Statue of Liberty.

Solution:

Using the given information, draw a figure as shown below.

In a right triangle,

[tex]\tan \theta=\dfrac{Perpendicular}{Base}[/tex]

In the triangle ABC,

[tex]\tan 9^\circ=\dfrac{305}{x}[/tex]

[tex]x=\dfrac{305}{\tan 9^\circ}[/tex]

[tex]x=1925.6942[/tex]

[tex]x\approx 1926[/tex]

Therefore, the tourist is standing 1926 feet from the Statue of Liberty.

?? I need a step by step explanation, please

Answers

Answer:

( 4 , − 1 )

Step-by-step explanation:

y= (x + 3)(x + 5)

y= x^2 + 5x + 3x + 15

y= x^2 + 8x +15

Select the correct answer.

What is the height, x, of the equilateral triangle?

an equilateral triangle with the angles labeled as 60 degrees and a side length of 14 inches, the height labeled as x

Answers

Answer:

x = [tex]7\sqrt{3} [/tex] inches

Step-by-step explanation:

- 2021 Edmentum

The height x of the equilateral triangle is 7√3 inches.

What is an Equilateral triangle?

Equilateral triangles are triangles that have all their sides and angles equal to each other. The three angles are 60 degrees each.

Therefore,

The side length of the equilateral triangle is 14 inches.

Therefore, To find the height of the triangle using the Pythagoras theorem.

c² = a² + b²

14² - 7² = b²

b² = 196 - 49

b² = 147

b = 7√3

Hence, The height x of the equilateral triangle is 7√3 inches.

learn more on the equilateral triangle here:

brainly.com/question/821299

#SPJ2

Claire has 8 cards: 4 red cards and 4 blue cards. She draws 3 cards from the set at random. What is the probability that all 3 cards are red?

Answers

Answer: 1/14 assuming cards are nut returned back in deck

Step-by-step explanation: first is red P(1. R) = 4/8 = 1/2

Second red P(2. R) = 3/7 and P(3. R) = 2/6 = 1/3.

Multiply probabilities , you get 1/14

Answer:

4/56 simplified is 1/14

Step-by-step explanation:

nCr(8,3) = 56

4 (the number of red cards there are) / 56 = 1/14

Solve using substitution. y = 5 7x - 8y = -12​

Answers

Step-by-step explanation:

y=57x-8y=-12

so we put the Y

y=-12

-12=57x-8y

57x-8x(-12)=-12

(-36/19,-12)<---- answer

Please answer both questions, thanks!

Answers

Answer: your welcome lol

Step-by-step explanation:

I dont see a question attached
Other Questions
A number cube is rolled what is the likelihood that a number less than or equal to three is rolled UnlikelyEqually likelyLikelyCertain Help me plzzzzzzzzzz I NEED NOW PLEASE>what is the significance of the international eucharist congress in the life of the church? Ayer, vosotras __________ (ensear, pagar, comer) en un restaurante muy elegante. help plss what did Jefferson believe to be an important role of citizens in the American political system? Someone help and plz make sure its right Dr. Lopez gives students 90 minutes to complete the final exam for her course. Most students use almost all thetime allowed, and relatively few students finish early, so the distribution of times that it takes students to finishthe exam is strongly skewed to the left. The mean and standard deviation of the finishing times are 85 and 10minutes, respectively.Suppose we took random samples of 40 students and calculated as the sample mean finishing time. We canassume that the students in each sample are independent.What would be the shape of the sampling distribution of ??Choose 1 answer:Skewed to the leftSkewed to the rightNo Where in the world is (or was) dancing illegal? Why is it illegal to dance there? Stacey's mom's hands are so full of groceries that she is waddling like a penguin to get up the stairs. NO LINKS PLZIn this sentence, the _______ suggests that Stacey's mom ________________. Select one:simile; is tottering in a strange manner.personification; is struggling to hold all the groceries.simile; has feet that are shaped like a penguin.metaphor; is wearing a black-and-white outfit. what happens to the rate of a reaction as the reaction progresses Ian needs to order some new supplies for the restaurant where he works. Therestaurant needs at least 593 spoons. There are currently 161 spoons. If each set onsale contains 6 spoons, write and solve an inequality which can be used to determineX, the number of sets of spoons Ian could buy for the restaurant to have enoughspoons A biologist observed a curved relationship between the average heart rates and life expectancies of severalmammal species in a large sample. The biologist took the natural logarithm for the values of both variables,and they noticed a linear relationship in the transformed data.Here's the least-squares regression equation for the transformed data, where life expectancy (LE) is inyears and heart rate (HR) is in beats per minute.In(LE6.33 0.78 In(HR)According to this model, what is the predicted life expectancy of a mammal species whose average heartrate is 200 beats per minute?You may round your answer to the nearest whole year.yearsShow Calculator Shi ion even know loo can someone write a 8-10 sentence protest poem about world hunger for around 9th grade level Which three southern states had the smallest percentage of white people? Delaware, Maryland,Virginia. Or Alabama, Georgia,Virginia? Ive finished my class good luck!!? What is meant by nucleoid? What is the length of bc in the right triangle below 9 12 Find the surface area of the cone. Round your answer to the nearest tenth.BRAIN>LY GIVING please help thank u!!!!!