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Post New Question
All Questions
+0
232614 Questions
0
420
1
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??
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Guest
Jul 4, 2020
0
480
1
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
0
613
1
+334
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
610
1
+118
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
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OlympusHero
Jul 4, 2020
0
350
1
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.
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Guest
Jul 4, 2020
+1
490
1
+334
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
0
358
1
help
Which of these numbers is largest?
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Guest
Jul 4, 2020
0
442
1
+334
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
351
2
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
535
1
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
373
1
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
713
3
+219
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.
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Noori
Jul 4, 2020
-1
515
1
log problem
Solve
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Guest
Jul 4, 2020
-1
440
1
please help
Solve
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Guest
Jul 4, 2020
0
494
2
+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)
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BillyBobJoeJr
Jul 4, 2020
-2
655
1
+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
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xplosions
Jul 4, 2020
-1
455
1
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
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Guest
Jul 4, 2020
-1
499
1
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
470
1
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
581
2
+16
help
with good explanation and answer
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namjin
Jul 4, 2020
-1
344
0
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
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Guest
Jul 4, 2020
-1
441
1
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
530
1
If then find the value of x.
If then find the value of x.
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Guest
Jul 4, 2020
-3
664
5
+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
364
0
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
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