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512

algebra

A dog, a cat and a rabbit were friends.One day they planned to weigh themselves. The cat and the rabbit together weighed 10 kg, the dog and rabbit together weighed 20 kg and the dog and the cat together weighed 24 kg. What is their total weight together?? read more ..

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Guest Jul 4, 2020

588

help

A line passes through the points (-3,-5) and (8,7). The equation of this line can be expressed in the form Ax + By = C, where A, B, and C are integers with greatest common divisor 1 and A is positive. Find A + B + C.

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Guest Jul 4, 2020

708

+335

help

Suppose that $\alpha$ is inversely proportional to $\beta$. If $\alpha = -6$ when $\beta = 12$, find $\alpha$ when $\beta = -2$.

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Rayjplayz Jul 4, 2020

-1

700

+119

hard number theory

Sherlock Holmes and Dr. Watson recover a suitcase with a three-digit combination lock from a mathematician turned criminal. Embedded in the suitcase above the lock is the cryptic message "AT SEA BASE. SEAS EBB SEA: BASS. "
Dr. Watson comments, "This read more ..

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OlympusHero Jul 4, 2020

460

help

In the quadrilateral ABCD above, AB=5, BC=7 and CD=6.
Given that it is possible to inscribe a circle in ABCD, find AD.

read more ..

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Guest Jul 4, 2020

593

+335

help

A line containing the points $(2, 16)$ and $(-8, -4)$ intersects the $y$-axis at what point?

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Rayjplayz Jul 4, 2020

453

help

Which of these numbers is largest?

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Guest Jul 4, 2020

556

+335

graphing lines

Given points $P(-2,7)$ and $Q(4,y)$ in a coordinate plane, for what value of $y$ is the slope of the line through $P$ and $Q$ equal to $\frac{-3}{2}$?

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Rayjplayz Jul 4, 2020

-1

458

Polynomials

Suppose $f$ is a polynomial such that $f(0) = 47$, $f(1) = 32$, $f(2) = -13$, and $f(3)=16$. What is the sum of the coefficients of $f$?

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Guest Jul 4, 2020

-1

648

trigonometry

Compute cos(0) + cos(5) + cos(10) + cos(15) + ... + cos(355). (All angles are in degrees.)

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Guest Jul 4, 2020

-1

477

help

In a certain sequence, the first term is 2014. After that, each term is equal to the sum of the cubes of the digits in the previous term. What is the 2014th term in this sequence?

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Guest Jul 4, 2020

-1

809

+223

HELP

Let B,A,D be three consecutive vertices of a regular 18-gon. A regular heptagon is constructed on AB, with a vertex C next to A. Find BCD in degrees.
read more ..

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Noori Jul 4, 2020

-1

632

log problem

Solve

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Guest Jul 4, 2020

-1

545

please help

Solve

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Guest Jul 4, 2020

605

+171

please help

Let
Find the function k(x) such that f is its own inverse.

Sorry for repost, but Guest got it wrong... (No offence to guest, I greatly appreciate him/her attempt to help) read more ..

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BillyBobJoeJr Jul 4, 2020

-2

764

+107

need help asap

Find a linear inequality with the following solution set. Each grid line represents one unit.

(Give your answer in the form ax+by+c>0 read more ..

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xplosions Jul 4, 2020

-1

568

Super stuck on this problem. Could I have some hints?

Determine the number of ways of placing the numbers 1, 2, 3, ... , 9 in a circle, so that the sum of any three numbers in consecutive positions is divisible by 3. (Two arrangements are considered the same if one arrangement can be rotated to obtain read more ..

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Guest Jul 4, 2020

-1

614

please help

If p = sin(arccot(x)), q = cot(arcsin(x)), and p^2 = f(q)/(1 + f(q)), then find f(5).

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Guest Jul 4, 2020

-1

561

help

Incircle of radius 4 cm of a triangle ABC touches the side BC at D. If BD=6 cm, DC = 8 cm, then what area of triangle ABC?

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Guest Jul 4, 2020

-2

661

+16

help

with good explanation and answer

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namjin Jul 4, 2020

-1

435

help

The image above shows a construction of fractal by joining smaller and smaller squares to each side of one single square.
We start with a square of side length 3.
In the second figure, the 4 new squares are formed with a side length of 1/3 of read more ..

Guest Jul 4, 2020

-1

554

help

A trader takes 26 kg of jasmine rice, which sells at $20 per kg, and mixes it with 30 kg of long grained rice, which sells at $36 per kg.
If he sells the mixture at $30 per kg, what is his percentage profit?

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Guest Jul 4, 2020

-1

643

If then find the value of x.

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Guest Jul 4, 2020

-3

750

+16

He y guys

I need help on this question and please givve a good explanation so i have an understand to thank you

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namjin Jul 4, 2020

-1

466

help

Suppose of all possible ways to choose two representatives among 10 students in a class, there are exactly 3030 different ways to choose one or more female as a representative. How many males are there in the class?

Guest Jul 4, 2020

All Questions ⁺⁰238125 Questions

algebra

help

help

hard number theory

help

help

help

graphing lines

Polynomials

trigonometry

help

HELP

log problem

please help

please help

need help asap

Super stuck on this problem. Could I have some hints?

please help

help

help

help

help

If then find the value of x.

He y guys

help

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