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834
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Вопросов
257
ответы
99
260 Questions
128 Answers
0
1
2
+834
Geometry
The area of square ABCD is 36. E is a point on \overline{CD} such that CE=2ED. F is the intersection of AB and CD. Find [DEF].
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maximum
4 сент. 2026 г.
0
1
1
+834
Geometry
In \triangle ABC, shown here, \overline{AB} and \overline{AC} have each been divided into four congruent segments. What fraction of triangle ABC is shaded? Express your answer as a common fraction.
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maximum
4 сент. 2026 г.
0
1
1
+834
Geometry
In the diagram, BD = 2 \cdot CD and CF = FB. Find the length AE.
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maximum
4 сент. 2026 г.
0
1
1
+834
Geometry
In the diagram, \triangle ABC \cong \triangle BFA. Find \frac{AB}{BC}.
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maximum
4 сент. 2026 г.
0
77
1
+834
Algebra
Let a and b be the solutions to 7x^2 + x - 5 = 6x^2 - 11x - 2. Compute (a - 4) + (b - 4).
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maximum
11 апр. 2024 г.
0
70
1
+834
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,
прочитайте больше ..
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maximum
7 апр. 2024 г.
0
5
1
+834
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 $IJKLMN$.
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maximum
28 янв. 2024 г.
0
76
1
+834
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
прочитайте больше ..
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maximum
16 янв. 2024 г.
0
84
1
+834
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
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maximum
16 янв. 2024 г.
0
100
0
+834
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
прочитайте больше ..
maximum
18 дек. 2023 г.
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последний
25
24
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2
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#1
+834
0
This is AoPS homework. Do not post AoPS homework.
maximum
2 янв. 2024 г.
#1
+834
+1
This is AoPS homework. Do not post AoPS homework.
maximum
31 дек. 2023 г.
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последний
11
10
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2
1
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