There are 300 students in the 9th grade and each student is assigned a locker. The 300 students start down the hall one at a time. The first student opens every locker. The second student closes all the lockers that are multiples of 2. The third student changes the lockers that are multiples of 3 (which means if a locker is closed, they open it. If the locker is open, they close it.) The fourth student changes all the lockers that are multiples of 4. This continues until the 300th student changes the 300th locker. Then, the principal walks down the hall, and changes all the lockers that are prime numbers. At the end, how many lockers will be closed?

Answers

Answer 1

Answer:

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289

Step-by-step explanation:

The pattern will lead to the answer being all the perfect squares from 1 to 300.


Related Questions

In a geometric sequence, the first term is 3 and the common ratio is 2. What is the sum of the first 9 terms?
a .99
b. 1022
c. 1533
d. 765

Answers

Step-by-step explanation:

99 is the answer........

The sum of the first 9 terms of the given GP series will be 1533 thus option (c ) is correct.

What is geometrical progression series?

A geometric progression is a sequence in which any element after the first is obtained by multiplying the previous element by a constant which is called a common ratio denoted by r.

For example, the sequence 1, 4, 16, 64,… is a geometric sequence with a common ratio of r = 4.

Let's say the first term of the given GP is a and the common ratio is r.

a = 3 and r = 2

The Sum of n term is given as,

S = a([tex]r^{n}[/tex] - 1) / (r - 1)

S₉ = [3(2⁹ - 1)/(2 - 1)]

S₉ = 1533

Hence "The sum of the first 9 terms of the given GP series will be 1533".

For more information about the geometrical progression,

brainly.com/question/4853032

#SPJ2

Gail runs a taxi.
Her running costs are £95 per day.
She charges £1.40 per mile travelled.
On Tuesday she carried passengers for a total of 50 miles.
What was her total loss?

Answers

Answer:

Her total loss was £25

Step-by-step explanation:

Here, we want to get the value of total loss

What we have to do here is to subtract the amount made from the running cost

From the question, we have the amount made as;

£1.40 * 50 = £70

So we have the loss as,

70-95 = -£25

Answer:

34

Step-by-step explanation:

i swear it is 34

When is a parallelogram also a rectangle?

Sometimes
Sometimes

Always
Always

Never
Never

Just on Fridays

Answers

The answer is sometimes

(Zoom in to see the problem) Please help. I gotta turn this in in 2 hours it’s 5:43 am right now and I can’t figure this out

Answers

3) friends and family plan
4) all inclusive plan

The rectangle below has an area of x^2-7x+10x 2 −7x+10x, squared, minus, 7, x, plus, 10 square meters and a width of x-5x−5x, minus, 5 meters.

Answers

what would you need the answer w just used scracitc or something 12

please help me!! 15 points for this

Answers

Answer:

snsbsjhwjwjwhjwjwjsjsjjsjsejejejjejejejejwjjwjwj

I need this Asap

the question below​

Answers

Answer:

[tex]5x^{4}[/tex]

Step-by-step explanation:

lmk if you need an explanation  :)

it’s 5x^4 because you simplify the fraction out

12/04 12021
Homework
Ato bought an item for GH¢ 1200 and
sold it for GH¢ 1400.00 find his.
Profit

Answers

Answer:

GH¢200.00

Step-by-step explanation:

GH¢1400-GH¢1200

GH¢200.00

What is the decimal that is equivalent to the fraction 59/100

Answers

Answer:

0.59

59/100 as a decimal is 0.59. Step-by-step explanation:

over the past ten years the population in a small city decreased by 12% resulting in a current population of 105,000 people what's the population of the city ten years ago

Answers

Answer:

119,318

Step-by-step explanation:

7th grade math help me pleaseeeeeee

Answers

33.20-3.50=29.70

29.70/6=4.95

It would cost Kurt $4.95 for one pair of socks.

Hope this helps, Cute PfP btw

A store has a T.V. on sale for 689.99 with a 25% off tag. There is also a storewide savings of an additional 25% off of the sale price.
What is the final price of the T.V.?

Answers

Answer:

i think

it should be the price 2000

please mark me as abrainlist

What is the value of 1-121?
A. -12
B.
-12
O
C.
12
OD. 0.12
O
E. 12.

Answers

Answer:

-120

Step-by-step explanation:

1-121 =

121 - 1 = 120

It becomes a negative because 1 is less than 121

A 17 ft ladder leans against the side of a house. The top of the ladder is 14ft off the ground. Find x, the angle of elevation of the ladder. Round your answer to the nearest tenth of a degree.

Answers

Answer:

.82 or 80 degrees rounded

Step-by-step explanation:

you can use SOH-CAH-TOA meaning sin = opposite/hypotenuse, so 14/17 = .82.

I need help please and can you also explain how you got the answer
I will give the crown, no trolls, no links please

Answers

Hello! Let’s start with multiplying them so they will have the same base! 2(2/3) = 4/6

Alright, now let’s divide them!

4/6 / 5/6 equals to 4 / 6 x 6 / 5 which is equal to 24 / 30 but I only see 2/3 times 6 / 5 WHICH IS the same thing tho.

what is the answer to 13+(-19)

Answers

Answer:

13+(-19)=13-19=-6 is your answer

Answer:

[tex]13 + ( - 19) \\ 13 -19 \\ = -6[/tex]

PLS MARK ME BRAINLIEST

Find the probability of at least one
failure in five trials of a binomial
experiment in which the probability of
success is 30%.
Round to the nearest tenth of a
percent.

Answers

Out of 5 trials, "at least one failure" = " at most four successess", so the probability you're looking for is

[tex]P(X\le 4) = \displaystyle\sum_{x=0}^4 \binom5x 0.30^x (1-0.30)^{5-x} \approx 0.99757 \approx \boxed{99.8\%}[/tex]

can someone please help me with this questio? im begging

Answers

Hope it helps you! .....

3. In a thunderstorm, the wind velocity in meters per second can be described by the function

v(p)=5.7998−p‾‾‾‾‾‾‾√,

where

p

is the air pressure in millibars. What is the air pressure of a thunderstorm in which the wind velocity is 49.3 meters per second? Round your answer to the nearest tenth of a millibar.

Answers

Answer:

p = 923.2 millibar

Step-by-step explanation:

Given that,

The wind velocity can be described by the function as follows :

[tex]v(p)=5.7\sqrt{998-p}[/tex]

Where

p is the air pressure in millibar

Put v = 49.3 m/s in the above function.

[tex]49.3=5.7\sqrt{998-p}[/tex]

Squaring both sides,

[tex]49.3^2=(5.7\sqrt{998-p})^2\\\\2430.49=32.49(998-p)\\\\\dfrac{2430.49}{32.49}=(998-p)\\\\74.80=(998-p)\\\\p=998-74.80\\\\p=923.2\ mbar[/tex]

So, the required pressure is equal to 923.2 millibar.

4
Nora draws a figure on a piece of paper
as shown.
8 cm
7 cm
What is the area of her figure? Use 3.14
for
A 53.12 cm?
© 106.24 cm
B) 78.24 cm?
128.48 cm2
Need answer ASAP

Answers

The answer is 78.24cm^2

Val is going to plant c vegetable seeds in one garden and 2c+9 vegetable seeds in another. How many seeds is Val going to​ plant?

Answers

Answer:

Val is going to plant 3c + 9 seeds.

Step-by-step explanation:

Add:  2c + 9 + c = 3c + 9.  Val is going to plant 3c + 9 seeds.

Wendy borrowed a 400-page book from the library. She read 50 pages. The book is due in 5 days. Complete the inequality to find x, the number of pages Wendy must read to finish the book ?

Answers

Answer:

350 Pages or 70 pages a day

Step-by-step explanation:

If the book is 400 pages long and she already read 50 pages she only needs to read 350 pages.

please answer fast need help

Answers

i think it’s maybe d i’m not for sure.

A sapling that started out 13.63 inches tall grew 2.41 inches per year. How tall was the sapling when it was 14 years old?

Answers

Answer:

47.37 Inches

Step-by-step explanation:

We start by assuming that we're at zero years when the tree is at 13.63 inches. We then ignore that height, and look at the rate of growth, which is 2.41 in / year.

The question asks how tall the tree is when it's 14 years old, so we multiply 2.41 inches / year by 14 years to get 33.74 inches.

The final step is to add that 33.74 onto the original 13.63 to get a new total of 47.37 inches when the sapling is 14 years old.

A puppy was born on April 1. The table gives the puppy's weights on three different
dates. Which graph best represents the puppy's weight on these days?

Answers

Answer:

it is the middle one

Step-by-step explanation:

i did it

A bag contains 10 discs.
Each disc is labelled with a different number from 1 to 10.
A disc is chosen from the bag at random.
Write down the probability that the chosen disc is the number 3

Answers

Answer: 1/10
Explanation: There are 10 discs in the bag so if you choose a 3 there is a 1 in 10 chance of you getting it

Find the area of this hexagon

Answers

The area is: 584.57 in ²

pls help I only need help with family 1​

Answers

Since the question says “identify anyone” could you possibly put there are no ages of the children that stick out since they are all five years apart

Let a be a number.
a*23 x a*8 =

Answers

Answer:

If a is a number then

[tex]a^{23} * a^{8} =a^{23+8} =a^{31}[/tex]

Step-by-step explanation:

Answer:

a=31

23+8=31

...........

HELP PLEASE I GIVE POINTS​

Answers

Answer:

∡ a = 80°

Step-by-step explanation:

the sum of the interior angles of a triangle is 180 degrees

a + 30 + 70 = 180

a + 100 = 180

a = 80

Answer:

80 Degrees

Step-by-step explanation:

A triangle equals 180 degrees when all sides are added together, so here we need to first add the angles of the ones we have available.

30 + 70 = 100

Now, we subtract to find out how much more we need...

180 - 100 = 80

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