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Post New Question
All Questions
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234802 Questions
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450
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need algebra help
Find all real numbers K such that the inequality $x^2 - 2(4K-1)x + 15K^2 - 2K- 7> 0$ holds for all real x.
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Guest
Jan 12, 2021
0
1
937
2
polygon
The interior angles of a convex polygon are in arithmetic progression. The smallest angle is 120 degrees and the common difference is 5 degrees. Find the number of sides of the polygon.
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Guest
Jan 12, 2021
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461
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line
Find the distance between the x-intercept and the y-intercept of the graph of the equation 3x - 6y = 18.
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Guest
Jan 12, 2021
0
321
1
A Complex Numbers Problem
Let $a$, $b$, and $c$ be complex numbers such that $|a|=|b|=|c|=1$ and $\frac{a^2}{bc}+\frac{b^2}{ac}+\frac{c^2}{ab}=-1$. Find all positive values of $|a+b+c|$.
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Guest
Jan 12, 2021
-2
527
1
+285
Help
What is the value of for which
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hihihi
Jan 12, 2021
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438
1
algebra
Solve 5[x] + 3 = x.
Note: [x] denotes the floor function.
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Guest
Jan 12, 2021
-2
585
3
+285
Help
Given that
and that
for real numbers x, y, and z, what is the value of xyz?
read more ..
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hihihi
Jan 12, 2021
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310
1
proportion
The value of y varies inversely as x and when x=24, y=15. What is x when y = 3?
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Guest
Jan 12, 2021
0
436
4
some one help me
ohanna receives a report that says her typing speed is 65 words per minute. She knows that she made 4 errors in the 5-minute test. How many words did she type in 5 minutes?
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Guest
Jan 12, 2021
0
321
1
Similar Triangles
This question just confuses me, and I don't really understand the diagram. Could someone help me out?
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Guest
Jan 12, 2021
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361
1
Repost because I was still a little confused
The polynomial equation \[x^3 + bx + c = 0,\]where $b$ and $c$ are rational numbers, has $3-\sqrt{7}$ as a root. It also has an integer root. What is it?
Why I'm confused, so in my last repost, melody, a great answered wanted me to
read more ..
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Guest
Jan 12, 2021
0
458
3
25 INTO 94 HOW MANY TIMES
So how do I solve this one? I've already done ten google searches, help!
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Guest
Jan 12, 2021
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314
0
help plz
Let
\[f(n) = \begin{cases} 3n + 1 & \text{if }n\text{ is odd} \\ \dfrac{n}{2} & \text{if }n\text{ is even} \end{cases}.\]
For how many integers n from 1 to 100, inclusive, does $f ( f (\dotsb f (n) \dotsb ))
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Guest
Jan 12, 2021
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315
1
help with line
What is the slope of the line determined by any two solutions to the equation 2/x + 8/y = 0? Express your answer as a common fraction.
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Guest
Jan 12, 2021
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508
1
gcf
Let GCF(a, b) be the abbreviation for the greatest common factor of a and b, and let LCM(c, d) be the abbreviation for the least common multiple of c and d. What is GCF(LCM(28, 14), LCM(7, 14))?
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Guest
Jan 12, 2021
0
492
1
parabola
Find a + b + c if the graph of the equation y = ax^2 + bx + c is a parabola with vertex (5,-3), vertical axis of symmetry, and contains the point (2,8).
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Guest
Jan 12, 2021
+1
487
1
+5
Please help ASAP! Please show all work as well. Thank you!
11. Find the number of functions f that map the set {1,2,3,4} into itself such that the range of the function f(x) is the same as the range of the function f(f(x).
12. Five girls and five boys randomly
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shirleyyy
Jan 12, 2021
0
338
1
Quick help please!
Find the value of n
1(3√7)5= 7^n
read more ..
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Guest
Jan 12, 2021
0
468
1
Surd Form
Write 3^7/2 in surd form. I'd appricate your answer greatly!
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Guest
Jan 12, 2021
-1
490
2
3d geo
Let APQRS be a pyramid, where the base PQRS is a square of side length 30. The total surface area of pyramid APQRS (including the base) is 1100. Let W, X, Y, and Z be the midpoints of AP, AQ, AR, and AS respectively. Find the total surface area of frustum
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Guest
Jan 12, 2021
0
433
1
Help is appreciated
The polynomial equation \[x^3 + bx + c = 0,\]where $b$ and $c$ are rational numbers, has $3-\sqrt{7}$ as a root. It also has an integer root. What is it?
Melody
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Guest
Jan 12, 2021
0
437
4
I need help with this question. ASAP!!
Find the slope of the line passing through the points
, ( -6, -5) and (4, 4)
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Guest
Jan 12, 2021
0
496
1
∫ 9 (3𝑥 + 10) 6
∫ 9 (3𝑥 + 10) 6
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Guest
Jan 12, 2021
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