Registro
Ingresar
Nombre de usuario
Contraseña
Ingresar
olvidó su contraseña
Inicio
Foro
+0
Formulario
Matemáticas
Ayuda
números complejos
cálculo diferencial
cálculo diferencial
Ecuaciones
Gráficas de funciones
Algebra lineal
Teoría de números
pourcentages
Fonctions estándar
Probabilidad
Trigonometría
Conversión de unidades
Unidades
Sobre
Impreso
Política de privacidad
Términos de Servicio
Credits
Google+
Facebook
Email de contacto
maximum
Nombre de usuario
maximum
Puntuación
817
Membership
Stats
Preguntas
253
Respuestas
74
256 Questions
103 Answers
0
16
1
+817
Algebra
Let a and b be the solutions to 7x^2 + x - 5 = 6x^2 - 11x - 2. Compute (a - 4) + (b - 4).
●
maximum
11 abr 2024
0
10
1
+817
Geometry
In triangle $PQR,$ $M$ is the midpoint of $\overline{PQ}.$ Let $X$ be the point on $\overline{QR}$ such that $\overline{PX}$ bisects $\angle QPR,$ and let the perpendicular bisector of $\overline{PQ}$ intersect $\overline{PX}$ at $Y.$ If PQ = 36, PM = 22,
lee mas ..
●
maximum
7 abr 2024
0
5
1
+817
Hexagon
Let $IJKLMN$ be a hexagon with side lengths $IJ = LM = 3,$ $JK = MN = 3,$ and $KL = NI = 3$. Also, all the interior angles of the hexagon are equal. Find the area of hexagon $IJKLMN$.
●
maximum
28 ene 2024
0
18
1
+817
Probability
A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability that a sophomore is elected is times the probability that a freshman is elected. Everyone on the junior varsity
lee mas ..
●
maximum
16 ene 2024
0
19
1
+817
Counting
Find the number of positive integers that satisfy both the following conditions:
- Each digit is a 1 or a 2 or a 3
- The sum of the digits is 5
●
maximum
16 ene 2024
0
20
0
+817
Counting
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For example, the number 222, 72, 45, and 810 and
lee mas ..
maximum
18 dic 2023
0
32
0
+817
Counting
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For example, the number 222, 72, 45, and 810 and
lee mas ..
maximum
18 dic 2023
0
18
1
+817
help counting
Six children are each offered a single scoop of any of $3$ flavors of ice cream from the Combinatorial Creamery. In how many ways can each child choose a flavor for their scoop of ice cream so that some flavor of ice cream is selected by exactly five c
lee mas ..
●
maximum
14 dic 2023
0
17
1
+817
Counting
A standard six-sided die is rolled $7$ times. You are told that among the rolls, there was one $1,$ one $2$, one $3$, one $4$, one $5$, and two $6$s. How many possible sequences of rolls could there have been? (For example, 2, 3,
lee mas ..
●
maximum
14 dic 2023
0
22
1
+817
Counting problem
How many ways can you write two different letters chosen from
A B C D E F G H I J K L M N O P
so that they are in alphabetical order, and the first letter is a vowel? For example, AF and EN count, but DE and KC do not.
●
maximum
14 dic 2023
0
33
0
+817
counting
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For example, the number 222, 72, 45, and 810 and
lee mas ..
maximum
14 dic 2023
0
31
0
+817
counting
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For example, the number 222, 72, 45, and 810 and
lee mas ..
maximum
14 dic 2023
0
18
0
+817
Counting
At a meeting, $5$ scientists, $2$ mathematicians, and a journalist are to be seated around a circular table. How many different arrangements are possible if each scientist must sit next to a mathematician? (Two seatings are considered equivalent
lee mas ..
maximum
14 dic 2023
0
19
1
+817
help plz
Four children and four adults are to be seated at a circular table. In how many different ways can they be seated if all the children are next to each other, and all the adults are next to each other? (Two seatings are considered the same if
lee mas ..
●
maximum
14 dic 2023
0
15
1
+817
need help
I have $4$ different mathematics textbooks and $3$ different psychology textbooks. In how many ways can I place the $7$ textbooks on a bookshelf, in a row, if there must be a mathematics textbook exactly in the middle, and all the psychology textbooks are
lee mas ..
●
maximum
14 dic 2023
0
6
1
+817
Counting
A speech class has $4$ freshmen and $3$ sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so that all the freshmen are standing together?
●
maximum
14 dic 2023
«
último
24
23
..
2
1
»
#1
+817
+1
This is AoPS homework. Do not post AoPS homework.
maximum
6 feb 2024
#1
+817
0
This is AoPS homework. Do not post AoPS homework.
maximum
20 ene 2024
«
último
9
8
..
7
6
5
4
3
..
2
1
»