Noori

45 Questions
59 Answers

+1

754

1

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Help would be appreciated :)

a rock is dropped from a height of 100 feet. Calculate the time between when the rock was dropped and when it landed. if we choose down as positive and ignore air friction, the function is h(t)= 36t^2-64

Noori Mar 3, 2021

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607

1

+218

Let a and b be positive two-digit integers with a

Let aa and bb be positive two-digit integers with a

Noori Oct 15, 2020

+1

918

1

+218

How many planes pass through three or more vertices of a regular octahedron?

How many planes pass through three or more vertices of a regular octahedron?

Noori Oct 15, 2020

0

580

1

+218

Help!

https://web2.0calc.com/questions/hello-thx-for-any-help

Noori Oct 11, 2020

0

520

0

+218

Please help!

https://web2.0calc.com/questions/hello-thx-for-any-help

Noori Oct 11, 2020

0

663

1

+218

https://web2.0calc.com/questions/hello-thx-for-any-help

https://web2.0calc.com/questions/hello-thx-for-any-help

Noori Oct 11, 2020

0

1418

5

+218

Hello, thx for any help!

Let R be the circle centered at (0,0) with radius 10. The lines x=6 and y=5 divide R into four regions R1, R2, R3 , and R4. Let R_i denote the area of region R_i If R1>R2>R3>R4,
then find R1-R2-R3+R4 read more ..

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Noori Oct 11, 2020

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1520

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+218

Help!

In triangle ABC, AB = AC, and angle A is equal to 36 degrees. Point D is on AC so that BD bisects angle ABC.
(a) Prove that BC = BD = AD.
(b) Let x = BC and let y = CD. Using similar triangles BCD and ABC, read more ..

Noori Oct 8, 2020

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1615

4

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I honestly just need help proving these:

In triangle ABC, AB = AC, and angle A is equal to 36 degrees. Point D is on AC so that BD bisects angle ABC.
(a) Prove that BC = BD = AD.
(b) Let x = BC and let y = CD. Using similar triangles BCD and ABC, read more ..

Noori Oct 8, 2020

-1

1474

2

+218

Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords

Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords WX and YZ is also 4. If UV = 78= and YZ = 50, then find WX.

Thank read more ..

Noori Oct 4, 2020

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1763

2

+218

Two circles with radius 1 are externally tangent at B, and have AB and BC as diameters. A tangent to the circle with diameter BC passes

Two circles with radius 1 are externally tangent at B, and have AB and BC as diameters. A tangent to the circle with diameter BC passes through A, and a tangent to the circle with diameter AB passes through C, so that the tangent read more ..

Noori Oct 4, 2020

-1

1195

4

+218

Find the length AC, to two decimal places. I got 3.21. Why is this wrong? Thank you!

Find the length AC, to two decimal places.
I got 3.21. Why is this wrong? Thank you!

Noori Oct 4, 2020

0

887

2

+218

Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords WX and

Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords WX and YZ is also 4. If UV = 78 and YZ = 50, then find WX.

Thank read more ..

Noori Oct 4, 2020

-1

653

4

+218

Thank you!

Two circles with radius 1 are externally tangent at B and have AB and BC as diameters. A tangent to the circle with diameter BC passes through A, and a tangent to the circle with diameter AB passes through C so that the tangent read more ..

Noori Oct 4, 2020

+218

+6

I am soo late but Happy Birthday!!

NooriOct 19, 2021

+218

0

nvm!

NooriOct 15, 2020

+218

0

thx!

NooriOct 11, 2020

+218

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I don't think that that is correct. Thanks though! Can someone else help?

NooriOct 11, 2020

+218

+2

And how can triangle ABC be a 30-60-90 triangle when angle A is 36 degrees?

NooriOct 8, 2020

+218

0

How did you prove that? Also, I would like help for the whole thing, as I am really confused.

NooriOct 8, 2020

+218

0

Are there any steps?

NooriOct 5, 2020

+218

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It is actually 66, but thank you!

NooriOct 5, 2020

+218

-1

Thank you!

NooriOct 5, 2020

+218

-1

16.71 is still wrong?

NooriOct 4, 2020

+218

-1

Steps please?

NooriOct 4, 2020

+218

0

Hi Pangolin14. Thank you! Did you try to attach an image? It says Not Available?

NooriOct 4, 2020

+218

-1

To solve this problem, we can use some basic maths. The mean of a data set is derived from the sum of the data numbers over the number of data numbers. If you need some more help, feel free to ask!

NooriOct 4, 2020

+218

0

Hello Guest,

To solve this problem, we can first use the distance formula. Find the length of the sides first.

(Hint: If you don't know the distance formula, it is: \(d=\sqrt{(x2-x1)+(y2-y1)}\)

Then, using the side lengths, you can apply the formula of b*h where b is the base, and h is the height to the rectangle and find the area. Please let me know if you need more help!

Noori

NooriOct 4, 2020

+218

-1

Sorry, I should have made it clear in the question. I would like some specific steps so that I know how to do these problems in the future. Thank you!

NooriOct 4, 2020

+218

-1

Yes, I do. Thank you!

NooriSep 29, 2020

+218

-2

Thank you so much!

NooriSep 29, 2020

+218

-1

Hi Nacirema,

I had this same problem, and I needed it in fraction form as well. I am assuming that you need it in fractional/radical form because you use AoPS. You will find the radical answer here:https://web2.0calc.com/questions/can-anyone-solve-this_6.

Hope this helps!

Noori

NooriSep 21, 2020