Suppose there are 1000 lockers in a school hallway and they are all closed. Only 50 students
come through the hallway and start opening and closing the lockers. The first student opened all
the lockers. The second student closed every second locker and so forth. The Third student
changes the state of every 3rd locker. The fourth student changes the state of every 4th locker,
the fifth student changes the state of every 5th locker and so on, until the 50th student.
a. What is the state of the following locker numbers: #91, #1505, #625, #1000?
i. How do you know? (please show how you know)

Answers

Answer 1

Answer:

Suppose there are 1000 lockers in a school hallway and they are all closed. Only 50 students

come through the hallway and start opening and closing the lockers. The first student opened all

the lockers. The second student closed every second locker and so forth. The Third student

changes the state of every 3rd locker. The fourth student changes the state of every 4th locker,

the fifth student changes the state of every 5th locker and so on, until the 50th student.

a. What is the state of the following locker numbers: #91, #1505, #625, #1000?

i. How do you know? (please show how you know)


Related Questions

At a sale, soccer cleats were sold for
$59.50. If the original price was :
$70, what
percentage of its original price were soccer
cleats sold for?

Answers

The percentage of its original price is -17.65%

How to determine the percentage of its original price?

The given parameters are

Selling price = $59.50

Original price = $70

The percentage of the original price is calculated as

Percentage = (Selling price - Original price)/Original price * 100%

Substitute the known values in the above equation

So, we have

Percentage = (59.50 - 70)/59.50 * 100%

Evaluate the difference in the above equation

So, we have

Percentage = -10.5/59.50 * 100%

Evaluate the quotient in the above equation

So, we have

Percentage = -0.1765 * 100%

Evaluate the product in the above equation

So, we have

Percentage = -17.65%

Hence, the percentage of its original price is -17.65%

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5x [(11-3) - (13-9)]

Answers

Answer: 20

Calculator helps lol

Simplifying
5x[(11 + -3) + -1(13 + -9)] = 0

Combine like terms: 11 + -3 = 8
5x[(8) + -1(13 + -9)] = 0
5x[8 + -1(13 + -9)] = 0

Combine like terms: 13 + -9 = 4
5x[8 + -1(4)] = 0

Multiply -1 * 4
5x[8 + -4] = 0

Combine like terms: 8 + -4 = 4
5x[4] = 0

Reorder the terms for easier multiplication:
5 * 4x = 0

Multiply 5 * 4
20x = 0

Solving
20x = 0

Mardi received an inheritance of $60,000. she investrf part at 11% and deposited the remainder in tax-free bonds at 12%. her total annual income from the investments was $6800. find the ammount invested at 11%.

Answers

When Mardi received an inheritance of $60000, she invested part at 11% and deposited the remainder in tax-free bonds at 12%, so she gets $6800as annual income then the amount invested at 11% is $20000

Given,

The total amount Mardi received = $60000

She invested part at 11% and deposited the remainder in tax-free bonds at 12%.

Annual income from the investment = $6800

Consider the part of money invested at 11% as x

Then the equation will become

(60000-x)0.11+0.12x =6800

6600-0.11x+0.12x =6800

0.01x+6600=6800

0.01x=200

x= $20000

Hence, when Mardi received an inheritance of $60000, she invested part at 11% and deposited the remainder in tax-free bonds at 12%, so she gets $6800 as annual income then the amount invested at 11% is $20000

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Selena rides her bicycle to work . it takes her 15 minutes to go 3 miles . if she continues at the same rate , how long will it take her to go

Answers

Answer:

5 minutes per mile

Step-by-step explanation:

15 divided by 3 = 5

the radius of a circle is 15.9 in. Find the circumference to the nearest 10

Answers

Answer:

see method below

Step-by-step explanation:

circum = 2πr

= 2 x π x 15.9

work that out and will give you the answer in inches

you can use a calculator for π or use 3.142

Answer: 99.9

Step-by-step explanation:

2⋅15.9⋅π

C= 31.8π

99.9


A cylinder has a radius of 5 centimeters and a height of 8 centimeters. Describe how the following change affects the volume of the cylinder.

d. The dimensions are exchanged.

Answers

Answer:

no d

Radius is changed

Step-by-step explanation:

a turn consists of rolling a standard die and tossing a fair coin. the game is won when the die shows a $1$ or a $6$ and the coin shows heads. what is the probability the game will be won before the fourth turn? express your answer as a common fraction.

Answers

The probability that the game will be won before the fourth turn is [tex]\frac{91}{216}[/tex].

What is probability?

Probability refers to the possibility of the occurrence of an event.

P(E) = probability of occurrence of an event E = [tex]\frac{Number Of Favourable Outcomes}{Total Number Of Outcomes}[/tex]

Now,

Probability of winning the game in first turn = [tex]\frac{1}{3}\frac{1}{2}=\frac{1}{6}[/tex]

Probability of losing the first game but winning the second one = [tex]\frac{5}{6}\frac{1}{6} = \frac{5}{36}[/tex]

Probability of losing the first two games but winning the third one = [tex]\frac{5}{6}(\frac{5}{6})\frac{1}{6} = \frac{25}{216}[/tex]

Thus, the probability of winning the game before fourth turn = [tex]\frac{1}{6}+\frac{5}{36}+\frac{25}{216}=\frac{91}{216}[/tex]

Hence, The probability that the game will be won before the fourth turn is [tex]\frac{91}{216}[/tex].

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evaluate the expression if a=3/4, b=-8, c=-2, d=3, and g=1/3

Answers

i think its (-1) but after putting it in the calculator thats what i got!

Determine the domain of the following graph

Answers

Answer:

5555555555555555555555555555

4+9-(-2)
Pls help asp

Answers

Step-by-step explanation:

[tex]4 + 9 - ( - 2) \\ 4 + 9 + 2 = 15[/tex]

Answer:

15

Step-by-step explanation:

➲ Solve

    [tex]4+9=13\\13-\left(-2\right)\\-\left(-2\right)=+2\\13+2\\13+2=15[/tex]

How does the simulation time (time for the circuit to compute the decimal value) change as the binary values get larger?

Answers

As you increase the input number size(increase the o. of bits) the simulator is going to perform more calculation to get the value of newly added bits by calculating 2^n (for nth bit!) and hence the running time complexity will increase exponentially .

What is an circuit?

Electronic components such as resistors, transistors, capacitors, inductors, and diodes are connected by conductive wires or traces that allow electric current to flow between them. It is a specific kind of electrical circuit, and in order for a circuit to be called electronic rather than electrical, there usually needs to be at least one active component present. Signals may be amplified, calculations can be made, and data can be transported from one location to another thanks to the combination of components and wires.

Although discrete components can be assembled into circuits and connected by single wires, it is now far more typical to use photolithographic processes to make interconnections on laminated substrates and solder the individual components to these linkages.

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pick a symbol that goes in the blank (pls answer asap i will give brainliest)
3 -1 ___ 1/4

=
<
>

Answers

Answer:

>

Step-by-step explanation:

2 of course greater than quarter

Answer:

Step-by-step explanation:

goo ba i think its gobba

Jeffrey caught 8 worms in his backyard. 4 worms had a length of 3 inches. The other 4 worms were all the same size. The total length of all the worms combined is 32 inches. Which equation below represents the lengths of all the worms?
A 4x + 3x = 324x + 3x = 32
B 4(x + 3) = 324(x + 3) = 32
C 4x + 3 = 324x + 3 = 32
D 3(x + 4) = 32

Answers

Option (B) 4 ( x + 3 ) = 32 is the equation that represents the lengths of all the worms.

We are given that:

Jeffrey has 8 worms

The 4 worms in it has the length of 3 inches.

The expression would become:

Length = 4 × 3

Also, we are given that the rest 4 worms are of equal length.

Let that equal length be x

The expression becomes:

Length = 4 × x = 4 x

Also, we are given that the total length of the worms = 32 inches.

The equation becomes:

32 = 3 × 4 + 4 × x

4 ( x + 3 ) = 32

Therefore, option (B) 4 ( x + 3 ) = 32 is the equation that represents the lengths of all the worms.

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Simplify the following expression: $\sqrt{28 + \sqrt{1296}}$

Answers

Answer:

I assumed you meant to write √28 + √1,296. The answer is 2√7 + 36.

Step-by-step explanation:

[tex]\sqrt{4 * 7} + \sqrt{1296} \\\sqrt{2^2 * 7} + \sqrt{1296}\\2\sqrt{7} + \sqrt{1296}\\ 2\sqrt{7} + \sqrt{36^2}\\= 2\sqrt{7} + 36[/tex]

What is the image point of (-6, 1) after a translation left 2 units and down 3 units?

Answers

Answer:

it is either -8,4 or -4,4

Step-by-step explanation:

i think this is it

The graph of h is a translation 6 units down and 2 units left of the graph of f(x)=x^2−7x. For each value of x, g(x) is 115% of h(x). Write a rule for g

Answers

The rule for the function g(x) is:

g(x) = 1.15*(x^2 - 3x -16)

How to write a rule for the function g?

First we know that the function f(x) is f(x) = x^2 - 7x

And we know that h(x) is a translation of 6 units down and 2 units to the left of f(x), then:

h(x) = f(x + 2) - 6

Now we know that g(x) is 115% of h(x), then we can write:

g(x) = 1.15*h(x)

Replacing h(x) by the rule above we get:

g(x) = 1.15*(f(x + 2) - 6)

Replacing the actual function there:

g(x) = 1.15*( (x + 2)^2 - 7*(x + 2) - 6)

g(x) = 1.15*( x^2 + 4x + 4 - 7x - 14 - 6)

g(x) = 1.15*(x^2 - 3x -16)

This is the rule for function g(x).

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Help! Geometry project parabolas part 3

Answers

Answer:

[tex](x-2)^2=4(y+5)[/tex]

Step-by-step explanation:

Standard form of a parabola with a vertical axis of symmetry

[tex]\large\boxed{(x-h)^2=4p(y-k) \quad \textsf{where}\:p\neq 0}[/tex]

[tex]\textsf{Vertex}=(h, k)[/tex]

[tex]\textsf{Focus}=(h,k+p)[/tex]

[tex]\textsf{Directrix}:y=(k-p)[/tex]

[tex]\textsf{Axis of symmetry}:x=h[/tex]

If p > 0, the parabola opens upwards.

If p < 0, the parabola opens downwards.

From inspection of the given graph:

Vertex = (2, -5)Focus = (2, -4)Directrix: y = -6Axis of symmetry: x = 2

Therefore:

h = 2k = -5k + p = -4  ⇒  -5 + p = -4  ⇒  p = 1k - p = -6  ⇒  -5 - p = -6  ⇒  p = 1

Substitute the found values of h, k and p into the formula:

[tex]\implies (x-2)^2=4(1)(y-(-5))[/tex]

[tex]\implies (x-2)^2=4(y+5)[/tex]

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one model for the number of students enrolled in u.s. public high schools as a function of time since 1986 is the formula below.

Answers

As per the given model for number of students given as a function of time since 1986 and relevant since 2000 , the number of students in 2010 is 14.67 millions.

As given,

Number of students given by formula

N =-0.033t² +0.46t +13.37

N =enrollments of students in millions

t =time

Relevant since 2000 we have to calculate N(10) ,it means after 10 years that is 2010

N(10) =-0.033×(10)² +0.46×10 +13.37

         =-3.3 +4.6 +13.37

         =14.67 millions

Therefore, number of students in 2010 is 14.67 millions is the correct option for the given model.

The complete question is :

One model for the number of students enrolled in U.S. Public high schools as a function of time since 1986 is  the formula below

N = -0.033t2 +0.46t + 13.37. Here N is the enrollment in millions of students, t is the time in years since 1986, and the model is relevant since 2000. Explain what does N(10) means

a. Year 2010, N = 14.67 millions

b. Year 2008 , N = 11.45 millions

c. Year 2010 , N = 12.32 millions

d. Year 2008 , N = 12.12 millions

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The graph of the function f is shown. Find f(4).
-2 -1
S
4
w
2
1
-1
-2
-3
A
1
-2
B 0
C 2
D 5
2
4 5 6

Answers

The value of f(4) on the graph is 2

How to determine the value of f(4)?

The figure (i.e. graph) represents the given parameter

The expression f(1) implies that we determine the value of f(x) when x = 1

On the graph, we have the following value:

When x = 4, f(x) = 2

This means that

f(4) = 2

Hence, the value of f(4) on the graph is 2

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Which expression of signed decimal numbers has a positive quotient?
Group of answer choices:

2.5 divided by negative 9.56

Negative 1.7 divided by negative 10.06

Negative 9.34 divided by 0.55

Negative 0.3 divided by 9.44

Answers

The quotient of an expression of signs decimal numbers is positive:

= 0.16.

The correct option is B.

Briefing:

There is one key notion when dividing any negative integer by another: the negative signs cancel out. This is unique to this situation. A positive number divided by such a negative number equals a negative number. As a result, you can't divide any two numbers as well as expect a positive result. In general, negative and positive numbers behave differently.

According to the given data:

For

a. 2.5 / -9.56

dividing the numbers we get:

= -0.26

For

b. -1.7 / -10.06

dividing the numbers we get:

= 0.16

For

c. -0.3 / 9.44

dividing the numbers we get:

= -0.03

For

d. -9.34 / 0.55

dividing the numbers we get:

= -16.98

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I understand that the question you are looking for is:

Which expression of signed decimal numbers has a positive quotient?

a. 2.5 / -9.56

b. -1.7 / -10.06

c. -0.3 / 9.44

d. -9.34 / 0.55

The length and the weight of 7 pipes are 24.5m and 43.3kg respectively, find the length and weight of 12 pipes

Answers

The length and the weight of the 12 pipe is found as 42 meters and 74.23 kg

What is referred as the unitary method?"It is a method in which we obtain the value of a single unit by subtracting the results of multiple units and thus the value of multiple units by subtracting the value of a single unit."We must first divide to discover the value of one thing, and then multiply to determine the significance of more or fewer things.

As, per the given question;

For, the seven pipes, the length is 24.5m.

7 pipes ---------> 24.5 m.

For the one pipe, use unitary method for solving;

Divide the equation by 7.

1 pipe -------->24.5/7 m.

For 12 pipes, multiply with 12 on both sides.

12 pipes --------> 24.5×12/7 m.

12 pipes --------->  42 m.

Thus, the length of the 12 pipes is 42 meters.

Now, calculate the weight.

For, the seven pipes, the weight is 43.3 kg.

7 pipes ---------> 43.3 kg.

For the one pipe, use unitary method for solving;

Divide the equation by 7.

1 pipe -------->43.3 kg./7

For 12 pipes, multiply with 12 on both sides.

12 pipes --------> 43.3 kg×12/7

12 pipes --------->  74.23

Thus, the weight of the 12 pipes is 74.23 kg.

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how to find prime factorization.
find the prime factorization of 1530

Answers

Answer:

Factors: 1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 306, 510, 765, 1530

Prime Factors of 1530 : 2 * 3 * 3 * 5 * 17

PLEASE HELP!
DONT UNDERSTAND NEED ANSWERS

Answers

3x+5=14

3x+5=14
-5 -5
you subtract -5 on 5 and 14
3x=9
---- ----
3 3
now you divide 3 and 9 which is 3
so
x=3

Answer:

Answer is 3

Step-by-step explanation:

they want to know or ask what time the three plus the five will give u 14.

when running a half marathon (13.1 miles), it took noah 8 minutes to run from mile marker 1 to mile marker 2, and 19 minutes to run from mile marker 2 to mile marker 4. how long did it take noah to run from mile marker 1 to mile marker 4?

Answers

It took Noah 27 minutes to run from mile marker 1 to mile marker 2, by basic algebra.

What is basic algebra?Numbers, variables, constants, expressions, equations, linear equations, and quadratic equations are all part of the basics of algebra.Additionally, the algebraic expressions contain the fundamental arithmetic operations of addition, subtraction, multiplication, and division.

Now,

Given:

Time taken to run from mile marker 1 to mile marker 2 = 8 minutesTime taken to run from mile marker 2 to mile marker 4 = 19 minutes

To find: Total time taken to run from mile marker 1 to mile marker 4.

Finding:

By basic algebra, we can say that:

The total time taken = Time taken to run from mile marker 1 to mile marker 2 + Time taken to run from mile marker 2 to mile marker 4

=> Total time taken = 8 minutes + 19 minutes = 27 minutes.

Hence, It took Noah 27 minutes to run from mile marker 1 to mile marker 2, by basic algebra.

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8. Which number is a solution of the
inequality 8-b≥ 27?
A -76
B-80
(C) -86
D-140

Answers

Answer:

All of the options.

Step-by-step explanation:

We first subtract 8 from both sides. We now divide both sides by -1. However, something to keep in mind, is when you multiply/divide by a negative number, you just flip the sign. In this case, we need to divide both sides of the equation by -1, to get b and our answer. So now, we need to find an answer from our answer choices that is smaller than -19. I think all of them would be right in this case, as they fit the equation. So all of them should be right (: As if you plug in the values, you get answers that could be solutions to the equation!

I hope this helps, have a blessed day!

If the triangle is translated 7 units to the right, then reflected over the x-axis, choose the quadrant the image will end up in and the correct coordinate for A'

Select 2 correct answers

Quadrant 2


Quadrant 3


Quadrant 4


A''(0, 3)


A''(1, -2)


Quadrant 1


A''(1, 2)

Answers

Answer:

Quadrant 4

A''(0, 3)

Step-by-step explanation:

Help with problems 17 and 18 please and thank you​

Answers

Answer: 17. Domain: x is all real numbers

Range: y>=0

18. r=2

Step-by-step explanation:

17. f(x)=|x-2|

|x-2|>=0

x-2>=0

x>=2

x-2=<0

x=<2

x can be less than, equal to, or greater than 2. Hence,

Domain: x is all real numbers

|x-2|>=0 ==> f(x)>=0

Hence, the range is:

Range: y>=0

18. m=(y2-y1)/(x2-x1)

2=(9-3)/(5-r)

2=6/(5-r)

2(5-r)=6

5-r=3

r=2

In am writing this because the app says the answer is to short :)))

Question 1 of 6
What number completes the sequence below? Enter your answer in the input
box at the bottom.
12
20
28
36
Answer here
5A
13
21
?

Answers

Answer:

I am pretty sure that it is 5A

-11(10x-10) = -110x+23

Answers

-11(10x - 10) = -110x + 23

-110x + 110 = -110x + 23

-110x + 110 - 110 = -110x + 23 - 110

-110x = -110x - 87

-110x - 110x = -110x - 110x - 87

0 = -87

This expression is invalid; 0 will never equal -87. For that reason, there are no solutions.

In a zoo there are zebras and orangutans.
Altogether there are 36 heads and 100 feet.
How many zebras are there?

Answers

Answer:14 zebras 22 orangutans

Step-by-step explanation: 14x4=56 22x2=44 56+44=100

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