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BRAlNBOLT
Username
BRAlNBOLT
Score
165
Membership
Stats
Questions
162
Answers
13
162 Questions
13 Answers
0
1
0
+165
Algebra
Find the number of ordered pairs $(a,b)$ of integers such that
\frac{a + 2}{a + 1} = \frac{b}{8}.
BRAlNBOLT
Sep 11, 2024
0
1
0
+165
Algebra
Suppose $f(x)$ is a function defined for all real $x$, and suppose $f$ is invertible (that is, $f^{-1}(x)$ exists for all $x$ in the range of $f$). If the graphs of $y=f(x)$ and $y=f(1/x)$ are drawn, at how many points do they intersect?
BRAlNBOLT
Sep 7, 2024
-1
1
1
+165
Geometry
Let $WXYZ$ be a trapezoid with bases $\overline{XY}$ and $\overline{WZ}$. In this trapezoid, $\angle ZXW = 120^\circ$, $\angle XWZ = 60^\circ$, and $\angle XYZ = 120^\circ$. Find $\angle YXZ$, in degrees.
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BRAlNBOLT
Aug 31, 2024
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1
1
+165
Coefficient
What's the coefficient of the x^2 y^4 term in the expansion of (x + y)*6*(3x - 2y)*(5x + y)^4?
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BRAlNBOLT
Aug 10, 2024
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1
1
+165
Coefficient
What's the coefficient of xy in the expansion of (3x + 3y + 3)^3?
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BRAlNBOLT
Aug 10, 2024
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4
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+165
Algebra
Let $f(x) = px + q$, where $p$ and $q$ are real numbers. Find $p+q$ if $f(f(f(x))) = 64x - 105 - 30x + 70 + 32x - 12$.
BRAlNBOLT
Aug 10, 2024
-1
4
1
+165
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
read more ..
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BRAlNBOLT
Aug 8, 2024
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2
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+165
Number Theory
Let $N$ be a positive integer. The number $N$ has three digits when expressed in base $7$. When the number $N$ is expressed in base $12$, it has the same three digits, in reverse order. What is $N$? (Express your answer in decim
read more ..
BRAlNBOLT
Jul 19, 2024
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+165
Number Theory
A positive integer is called terrific if it has exactly $10$ positive divisors. What is the smallest terrific positive integer?
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BRAlNBOLT
Jul 19, 2024
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3
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+165
Algebra
Find the minimum value of \frac{x^2}{x - 1 + x^3} for x > 1
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BRAlNBOLT
Jul 18, 2024
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5
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+165
Algebra
Find all values of t such that floor(t) = 3t + 4 - t^2. If you find more than one value, then list the values you find in increasing order, separated by commas.
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BRAlNBOLT
Jul 18, 2024
-1
3
1
+165
Algebra
Let
f(x) = \left\lfloor\frac{2 - 3x}{3x + 1}\right\rfloor.
Evaluate f(1)+f(2) + f(3) + \dots + f(999)+f(1000). (This sum has 1000 terms, one for the result when we input each integer from 1 to 1000 into f.)
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BRAlNBOLT
Jul 18, 2024
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Av_1 = -4v_1 and Av_2 = 5v_2.
BRAlNBOLT
Jun 5, 2024
#1
+165
-8
The coordinates of B are (-14,26).
BRAlNBOLT
Jun 5, 2024
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