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Post New Question
All Questions
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232716 Questions
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545
8
Geometry
Let Q be the center of equilateral triangle ABC. A dilation centered at Q with scale factor -4/3 is applied to triangle ABC, to obtain triangle A'B'C'. Let S be the area of the region that is contained in both triangles ABC and A'B'C'. Find
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Guest
Feb 20, 2021
0
1415
6
Please help
A regular pentagon is cut out of a flat piece of cardboard. The pentagon is then placed back into the pentagonal hole. How many ways can the pentagon be placed back into the hole, if the pentagon can be rotated and/or reflected?
I know that it can
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Guest
Feb 20, 2021
0
394
1
+130
3 things i guess
1. Let f(x)=x^2 +1 and g(x)=x-3. Write an expression for f*g(x))
2. Let f(x)=x^2 -2x. Find all real numbers x such that f(x)=f(f(x))
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mintjellyxd
Feb 20, 2021
0
449
1
word problem
A creature on the moon throws a rock off a cliff. The height of the rock above the surface of the moon, in meters, t seconds after it is thrown is given by h(t)=-t^2 +8t+10. When does the rock hit the surface of the moon?
CubeyThePenguin
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Guest
Feb 20, 2021
0
653
1
just one question for ya
Find the equation of a parabola whose vertex is at (−1, 7), whose axis of symmetry is x = −1, and whose y-intercept is (0, 10). Write your answer in vertex form.
CubeyThePenguin
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Guest
Feb 20, 2021
0
521
1
evaluate these pls
1. Evaluate 10001^2 - 9999^2
2. Evaluate (-5+2i)/(1+7i)
i=sqrt(-1)
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CubeyThePenguin
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Guest
Feb 20, 2021
0
426
1
a few questions
1. Expand (x+2)(x^2 +3)
2. Factor the quadratic x^2 -9x-36
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Guest
Feb 20, 2021
0
386
1
+1679
help with percent
A store purchased a coffee table and makred it up for 125% from the original cost of 20 dollars. A week later, the store placed the coffee table on sale for 40%. What was the discount price?
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wiseowl
Feb 20, 2021
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330
0
word problem
Four friends go out to lunch together. Mike orders a personal pizza with 2 toppings for 7.00. Dustin orders a personal pizza with 5 toppings for 9.25. Lucas orders a calzone with 1 topping for 5.75. Will orders a calzone with 4 toppings for 8.75. For what
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Guest
Feb 20, 2021
0
272
0
The cost of tickets to a school play
The cost of tickets to a school play are $\$10$ for adults and $\$6$ for children under 12. If there were a total of 100 tickets sold to the play on a certain night, what equation would you use to represent the total ticket sales, T, if the number of adult
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Guest
Feb 20, 2021
-1
656
1
+230
yep me again
The arithmetic mean of an odd number of consecutive odd integers is $y$. Find the sum of the smallest and largest of the integers in terms of $y$.
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wizzymath
Feb 20, 2021
+1
395
1
+195
Function help
Let $f(x) = 3x + 2$ and $g(x) = x^2 - 5x - 1.$ Find $f(g(x)).$
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QuestionMachine
Feb 20, 2021
-1
498
1
+230
come one now help a girl out
If $f(x) = -7x^4 + 3x^3 + x - 5$, and $g(x)$ is a polynomial such that the degree of $f(x) + g(x)$ is 1, then what is the degree of $g(x)$?
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wizzymath
Feb 20, 2021
-1
361
1
+230
hey help pls
Let
\[f(n) = \left\{
\begin{array}{cl}
n^2-2 & \text{ if }n<0, \\
2n-20 & \text{ if }n \geq 0.
\end{array} <#> \right.\]
What is the positive difference between the two values of $a$ that satisfy the equation $f(-2)+f(2)+f(a)=0$?
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wizzymath
Feb 20, 2021
0
466
1
+69
Function problem
If f(x)= (ax+b)/(cx+d), abcd ≠ 0 and f(f(x))=x for all x in the domain of f, what is the value of a+d?
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ddocm
Feb 20, 2021
0
453
1
polygon
In the given polygon, BO = 7x + 4, OD = 18. Find x.
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Guest
Feb 20, 2021
0
411
1
+69
Function problem
Let N,O be functions such that N(x) = 2/sqrt(x), and O(x) = x^2. What is N(O(N(O(N(O(3)))))?
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ddocm
Feb 20, 2021
0
673
1
Find the value of angle DCB
Find the value of angle DCB
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Guest
Feb 20, 2021
-1
385
1
+230
y'all I'm am struggling here
Suppose that $a^2$ varies inversely with $b^3$. If $a=7$ when $b=3$ find the value of $a^2$ when $b=6$.
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wizzymath
Feb 20, 2021
-1
390
1
+230
hey besties it me again
Find the sum of the squares of the solutions to $2x^2+4x-1=0$.
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wizzymath
Feb 20, 2021
0
765
1
polygon
In the given polygon, AC = 5x - 24, AO = 3. Find x.
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Guest
Feb 20, 2021
0
430
1
Find the value of x, y, and z
Find the value of x, y, and z
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Guest
Feb 20, 2021
0
635
1
volume
Volume of a box is 96 cubic inches. The length is 8 inches more than the height. The width is 2 inches less than the height. Find the dimensions of the box
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Guest
Feb 20, 2021
+1
420
1
+195
Help
Let $f(x) = 2x^2 + 3x - 9,$ $g(x) = 5x + 11,$ and $h(x) = -3x^2 + 1.$ Find $f(x) - g(x) + h(x).$
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QuestionMachine
Feb 20, 2021
+1
439
2
+195
Help
Let $f(x) = 4x - 7$, $g(x) = (x + 1)^2$, and $s(x) = f(x) + g(x)$. What is $s(3)$?
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QuestionMachine
Feb 20, 2021
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