All Questions ⁺⁰230889 Questions

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please help!

A triangle has sides 6,7 and 8. The line through its incenter parallel to the shortest side is drawn to meet the other two sides at P and Q. Then find the of the segment PQ.

Guest Jun 21, 2020

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514

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Halp!

What is the equation of the line parallel to $4x+2y=8$ and passing through the point $(0,1)$? Write the equation in slope-intercept form.

Rayjplayz Jun 21, 2020

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884

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help!!

In the game of Frood, dropping $n$ froods gives a score of the sum of the first $n$ positive integers. For example, dropping five froods scores $1 + 2 + 3 + 4 + 5 = 15$ points. Eating $n$ froods earns $10n$ points. For example, eating five froods earns read more ..

AnimalMaster Jun 21, 2020

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366

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please help

In the figure ,radius of incircle of ABC is 4 cm.If BD =6 cm ,DC = 8 cm then the length of AC is!

Guest Jun 21, 2020

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362

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help

If the decagon is inscribed in a unit circle, what is the length of AB in the diagram below?

Guest Jun 21, 2020

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944

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HElp

The value of $2x+10$ is half of the value of $5x+30$. What is the value of $x$?

Rayjplayz Jun 21, 2020

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820

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Hl-p

Two shaded identical rectangular decorative tiles are first placed (one each) at the top and at the base of a door frame for a hobbit's house, as shown in Figure 1. The distance from W to H is 45 inches. Then the same two tiles are rearranged at the top read more ..

Rayjplayz Jun 21, 2020

+1

1257

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Halp

What is the equation of the line parallel to $4x+2y=8$ and passing through the point $(0,1)$? Write the equation in slope-intercept form.

Rayjplayz Jun 21, 2020

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438

1

help

If A and B are the roots of x^2 - 4x + 1 = 0, then find A^3 + B^3.

Guest Jun 21, 2020

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654

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+334

Halp!

A large rectangle has side lengths of $(x+7)$ and $(x+5)$. In the large rectangle, there is a rectangular hole with side lengths of $(2 x-3)$ and $(x-2)$. What is the area of the large rectangle (not including the area of the hole)? Express your answer read more ..

Rayjplayz Jun 21, 2020

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442

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HELP ASAP

A large rectangle has side lengths of $(x+7)$ and $(x+5)$. In the large rectangle, there is a rectangular hole with side lengths of $(2 x-3)$ and $(x-2)$. What is the area of the large rectangle (not including the area of the hole)? Express your answer read more ..

Guest Jun 21, 2020

Jun 20, 2020

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573

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2 questions for help, thanks for your time, quite urgent though

If f(x)=x^3+3x^2+3x+1, find f(f^-1(2010)).

If f(x) = 1/(x + 2) what is f(f(1))? read more ..

Guest Jun 20, 2020

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879

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Help plz

Find the intersection of the lines $9x-4y=30$ and $7x+y=11.$ Express your answer as an ordered pair $(x,y).$

Guest Jun 20, 2020

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1240

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+334

Help ASAP

At the AoPS office, mice vary inversely with cats, that is, $\text{mice}=\frac{k}{\text{cats}}$, for some value of $k$. When there are $3r-19$ cats, there are $2r+1$ mice, and when there are $6r-27$ mice, there are $r-5$ cats. Find $k$.

Rayjplayz Jun 20, 2020

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356

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help

Given that B and D are the centers of the two circular prints, what is the value of the angle labeled x?

read more ..

Guest Jun 20, 2020

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570

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+256

Combonation Problem

What is the sum of the coefficients of (x + 2y)
200? Hint – try this for some smaller exponents
and make a strategy.

BWStar Jun 20, 2020

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525

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+865

i need some help..

What is the value of y in the arithmetic sequence y + 6, 12, y?

AnimalMaster Jun 20, 2020

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418

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please help

Guest Jun 20, 2020

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354

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help

In triangle ABC, BC = 12, AC = 13, and AB = sqrt(31). If the altitude is AE and the median is AD, then find DE.

Guest Jun 20, 2020

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328

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can anyone help?

ABC is any triangle such that AB=9 and AC=6 and ∠BAC=60∘. Calculate the height AH issued from A to BC.

Guest Jun 20, 2020

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322

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counting

How many ways can you choose three different numbers from 1, 2, 3, ..., 50, so that one number is equal to the sum of the other two?

Guest Jun 20, 2020

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461

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need help on this

In circle O as shown above, AB=2 cm and DC=6 cm, ∠BAC=∠ACD=45∘. What is the radius of circle O?

read more ..

Guest Jun 20, 2020

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374

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help

Let denote the centroid of triangle . If , then find .

Guest Jun 20, 2020

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331

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help

Which positive integer n satisfies the inequality below?

Guest Jun 20, 2020

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342

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help

Three circles of the same size fit in an equilateral triangle with side length of 2 cm, find the radius of each of these circles.

read more ..

Guest Jun 20, 2020

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