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216220 Questions
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99
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Polynomial
If p(x) = x^4 - 3x + 2, then find the coefficient of the x^3 term in the polynomial (p(x))^2.
Guest
Oct 15, 2021
0
119
0
Help me with this inverse function :)
How do you get x on one side in this equasion: y=sqrt((x-1)) + 3
Im going to find the inverse function of f(x)=sqrt((x-1))+3...
(domain: [1,26])
read more ..
Guest
Oct 15, 2021
0
205
1
Inequality
Let w, x, y, and z be positive real numbers. If w + x + y + z = 8, then what is the maximum value of wxyz?
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Guest
Oct 15, 2021
0
140
1
Counting
A coin is tossed 10 times. How many different sequences of tosses could there have been, if at least $5$ of the tosses were heads?
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Guest
Oct 15, 2021
0
135
0
help counting
1. In how many ways can you spell the word FOOT in the grid below? You can start on any letter F, then on each step you can step one letter in any direction (up, down, left, right, or diagonal)
\begin{array}{cccc} F & F
read more ..
Guest
Oct 15, 2021
0
109
0
Number Theory
The proper divisors of 12 are 1, 2, 3, 4 and 6. A proper divisor of an integer $N$ is a positive divisor of $N$ that is less than $N$. What is the sum of the proper divisors of the sum of the proper divisors of $288$?
Guest
Oct 15, 2021
0
109
0
Inequality
If w, x, y, and z are positive real numbers such that w + 2x + 3y + 4z = 18 then what is the maximum value of wxyz?
Guest
Oct 15, 2021
0
133
0
Coordinates
Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2 + PC^2 = 3*PQ^2 + k.
If A = (4,-1), B = (8,-2), and C = (1,-11), then find the constant
read more ..
Guest
Oct 15, 2021
0
195
1
Geometry
The tangent to the circumcircle of triangle WXY at X is drawn, and the line through W that is parallel to this tangent intersects at Z. If XY = 14 and $WX = 5$ find YZ.
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Guest
Oct 15, 2021
0
205
3
5rhsiyfoyxiyxigxt
Helen bought 28 boxes of donuts. Each box contained 12 donuts.
After Helen gave away 5/8 of all tightened donuts, how many donuts did she have
left?
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Guest
Oct 15, 2021
0
192
1
Can help me. Thank you
John had a sum of money. He spent $132 on a computer software and 3/4 of his
remaining money on 5 indentical books. The amount he had left wa equal to 1/6 of his
money. How much did each book cost?
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Guest
Oct 15, 2021
0
102
0
Coordinates
Harry and Sandy wish to meet at a point in Hogwarts that is at the midpoint of their coordinates. Harry is standing at (9,-2), and Sandy is standing at (7,8). At what coordinate will they meet?
Guest
Oct 15, 2021
0
132
0
Base numbers
A base-10 integer n can be represented as $32_a$ in one base and $13_b$ in another base, where a and b are any integer bases larger than 3. What is the smallest possible sum a+b?
Guest
Oct 15, 2021
0
211
1
WHAT IS 2:3
WHAT IS 2:3
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Guest
Oct 15, 2021
0
124
1
Help me
Tom bought some flour. He filled 18 big jars and 25 small bottles with all the
flour. A big jar contained 10.6 g of flour more than a small bottle. The mass
of the flour in all the big jars was the mass of the flour in all
read more ..
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Guest
Oct 15, 2021
0
137
1
Plz help
Andrew and Blake had equal amount of money at first. Andrew then spent $10 while Blake was given another $56. In the end, Andrew has one-third as much money as Blake. How much money did Andrew have at first?
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Guest
Oct 15, 2021
+1
339
4
+675
The three sisters and their mother
The following is known about the respective ages of the three sisters Alina, Melina and Selina:
(1) Alina is twice as old as Selina.
(2) Alina and Melina are 20 years old together.
(3) Selina is two years younger than Melina.
(a)
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Straight
Oct 15, 2021
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165
2
I need it rn please :>
A loudspeaker needs a household voltage of 110 V to push a current of 5 A through its coil. What is the resistance of the loudspeaker?
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Guest
Oct 15, 2021
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159
0
help
Lillian and James write numbers 1 through 500 on a blackboard. Lillian erases 5, and then James erases 22. Then they start erasing every integer that is either 5 or 22 greater than an erased integer. At the end of the process, what is the largest integer
read more ..
Guest
Oct 15, 2021
0
101
0
I need help
Draw a graph of f(x)=2x+82x−4f(x)=2x+82x-4 by first placing the horizontal and vertical asymptotes, then plotting an additional point on the graph.
Guest
Oct 15, 2021
0
196
1
help counting
How many 3-digit numbers contain exactly one 1 and one 2?
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Guest
Oct 15, 2021
-2
166
0
+25
Derivatives of Logarithmic Functions
im stuck please help!
read more ..
unaza
Oct 15, 2021
-2
246
1
+25
Derivatives of Logarithmic Functions
please help!!! stuck :(
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unaza
Oct 15, 2021
-2
219
1
+25
Derivatives of Logarithmic Functions
please help!!! :(
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unaza
Oct 15, 2021
0
119
0
help graphing
Assume that f(3) = 4. Name a point that must be on the graph of y = f(x + 4).
Guest
Oct 15, 2021
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