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All Questions
^{+0}
188170 Questions
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76
1
solve
Solve
\[ (x+4)^3 + (x+5)^3 = (x+7)^3 + (x-4)^3 . \]
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Guest
Jan 14, 2021
0
69
3
Repost! :)
Let $a$ and $b$ be real numbers such that the quadratic equations $x^2 + ax + b = 0$ and $ax^2 + bx + 1 = 0$ have a root in common. Enter all possible values of $a + b,$ separated by commas.
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Guest
Jan 14, 2021
0
64
2
area of curve
In the diagram, regular hexagon \(ABCDEF\) has sides of length \(2\).
Using \(A\), \(C\) ,\( E\) as centers, portions of circles with radius \(1\) are drawn outside the hexagon.
Using \(B\), \(D\) and \(F\) as centers,
read more ..
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Guest
Jan 14, 2021
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103
5
+264
Complex Numbers
Hi, could someone help me with this question?
The complex numbers z and w satisfy |z| = |w| = 1 and zw =/= -1.
(a) Prove that and .
(b) Prove that is a real number.
read more ..
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Caffeine
Jan 14, 2021
0
51
0
graph
Suppose the graph of y = f(x) includes the points (1,-5), (-2,3) and (3,1).
Based only on this information, there are two points that must be on the graph of y = f(x(x)) . If we call those points (a,b) and (c,d) what is ab +
read more ..
Guest
Jan 14, 2021
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48
0
percent question
In these puzzles, the goal is to fill every empty square (including shaded squares) so that:
1. Each square contains a positive digit (1-9). Digits may be reused.
2. The percent next to a row gives the percent of the row sum contained in
read more ..
Guest
Jan 14, 2021
Jan 13, 2021
0
76
9
+110
Find the chord length
In the circle below, AB || CD and . AD is a diameter of the circle, and AD = 36. What is the number of inches in the length of AB? Express your answer in terms of pi. Could I solve this with using Trignometry?
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geoNewbie21
Jan 13, 2021
0
54
1
algebraic system
\[\begin{equation}x+y=z \\ x-y=z\\ xy=z \end{equation}\] Find \(x, y, z \). Enter your answer as \(3x+2y+z\).
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Guest
Jan 13, 2021
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49
0
Help appreciated
Let $a$ and $b$ be real numbers such that the quadratic equations $x^2 + ax + b = 0$ and $ax^2 + bx + 1 = 0$ have a root in common. Enter all possible values of $a + b,$ separated by commas.
Guest
Jan 13, 2021
0
56
1
help with percent
In these puzzles, the goal is to fill every empty square (including shaded squares) so that:
1. Each square contains a positive digit (1-9). Digits may be reused.
2. The percent next to a row gives the percent of the row sum contained in
read more ..
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Guest
Jan 13, 2021
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50
0
ratio question
If $\left(x+\dfrac{1}{x}\right):\left(x-\dfrac{1}{x}\right)=5:4$, then find the value of x.
Guest
Jan 13, 2021
-1
67
1
-3
HELP QUICK PLEASE
Two diagonals of a parallelogram have lengths 6 and 8 . What is the largest possible length of the shortest side of the parallelogram? (it isn't 3 btw)
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menameisjeff
Jan 13, 2021
0
46
0
help with percent
In these puzzles, the goal is to fill every empty square (including shaded squares) so that:
1. Each square contains a positive digit (1-9). Digits may be reused.
2. The percent next to a row gives the percent of the row sum contained in
read more ..
Guest
Jan 13, 2021
0
51
1
word problem
Hannah is 7 years older than Tim was 2 years ago. If Tim is half of Hannah's age at present, then how old is Hannah now?
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Guest
Jan 13, 2021
0
65
5
Answer this question with this format
Answer this question with this format
The last two problems this week are puzzles! In these puzzles, the goal is to fill every empty square (including shaded squares) so that:
1. Each square contains a positive digit (1-9).
read more ..
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Guest
Jan 13, 2021
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42
0
trapezoid
Let WXYZ be a trapezoid with bases XY and WZ. In this trapezoid, angle ZXW = 106 degrees, angle XWZ = 48 degrees, and angle XYZ = 147 degrees. Find angle YXZ in degrees.
Guest
Jan 13, 2021
0
51
2
How Many Times Does 1/2 Go Into 2 1/4
How Many Times Does 1/2 Go Into 2 1/4?
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Guest
Jan 13, 2021
0
167
1
HELP ASAP
The question I posted wasn't showing up, so I will just write it again. It's a part of my hw, and I'm really confused. A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability
read more ..
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Guest
Jan 13, 2021
0
55
1
+236
Please help me on this question and if possible please explain it so I can learn!! :) TY
It takes cups of flour, cups of sugar, and cup of butter to bake fifteen shortbread cookies. If Ramon has 5 cups of flour, 4 cups of sugar, and cups of butter, how many shortbread cookies can he bake?
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Choff
Jan 13, 2021
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51
2
number theory
What is the largest positive integer n for which n^3+100 is divisible by n+1?
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Guest
Jan 13, 2021
0
48
1
help
what is something x somthing that makes 58
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Guest
Jan 13, 2021
0
56
1
I thinking of a number
When I add 5 and multiply the answer by 4, I get 48.
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Guest
Jan 13, 2021
0
56
1
so what is it.
what 2 numbers add up to 3 and multiply to -28
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Guest
Jan 13, 2021
0
47
0
Help Please!
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 3/2 the probability that a freshman is elected. Everyone on the junior varsity swim team
read more ..
Guest
Jan 13, 2021
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