Noori

45 Questions
59 Answers

+1

815

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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 3 mar 2021

0

664

1

+223

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

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

Noori 15 oct 2020

+1

971

1

+223

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 15 oct 2020

0

631

1

+223

Help!

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

Noori 11 oct 2020

0

577

0

+223

Please help!

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

Noori 11 oct 2020

0

719

1

+223

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

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

Noori 11 oct 2020

0

1466

5

+223

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 lee mas ..

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Noori 11 oct 2020

-1

1541

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+223

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, lee mas ..

Noori 8 oct 2020

0

1641

4

+223

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, lee mas ..

Noori 8 oct 2020

-1

1499

2

+223

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 lee mas ..

Noori 4 oct 2020

0

1813

2

+223

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 lee mas ..

Noori 4 oct 2020

-1

1234

4

+223

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 4 oct 2020

0

928

2

+223

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 lee mas ..

Noori 4 oct 2020

-1

689

4

+223

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 lee mas ..

Noori 4 oct 2020

+223

0

16.71 is still wrong?

Noori4 oct 2020

+223

0

Steps please?

Noori4 oct 2020

+223

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

Noori4 oct 2020

+223

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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!

Noori4 oct 2020

+223

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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

Noori4 oct 2020

+223

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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!

Noori4 oct 2020

+223

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Yes, I do. Thank you!

Noori29 sept 2020

+223

-1

Thank you so much!

Noori29 sept 2020

+223

0

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

Noori21 sept 2020