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Post New Question
All Questions
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230590 Questions
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221
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 $WX = 15$ find YZ.
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Guest
Nov 6, 2021
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225
1
Algebra problem
I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 32 mies per hour instead, then I would have arrived 28 minutes later. How many miles did I drive?
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Guest
Nov 6, 2021
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396
2
help Counting
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 &
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Guest
Nov 6, 2021
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520
1
Geometry
Triangle ABC has side lengths 29, 40, and 40. Find the inradius of triangle ABC. Find the circumradius of triangle ABC.
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Guest
Nov 6, 2021
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222
1
Number Theory
When the digits in the number 2005 are reversed we obtain the number 5002 and 5002=a*b*c such that a, b and c are three distinct primes. What are a, b, and c?
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Guest
Nov 6, 2021
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280
1
Number Theory
The prime factorization of 2007 is 3^2*223. How many ordered pairs of positive integers (x,y) satisfy the equation xy^2=2007?
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Guest
Nov 6, 2021
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163
0
Geometry
Let ABCD be a trapezoid with midsegment MN, and suppose the diagonals split MN into three segments MP, PQ, and QN. If AB=8 and CD = 18, find the lengths of the midsegment MN and the three segments MP, PQ, and QN.
Guest
Nov 6, 2021
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179
0
Sequence
Compute the domain of the function f(x)=1/(x^2 - 7x + 13).
Guest
Nov 6, 2021
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172
0
functions
If t(x) = 3-g(x) and g(x) = sqrt(sqrt(x)), then what is t(g(16))?
Guest
Nov 6, 2021
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194
1
Please Help ASAP!
Find g^-1(3) given that g(x) = (3x + 1)/(2x + g(x))
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Guest
Nov 6, 2021
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181
0
Rhombus
What's the area of a rhombus thats angles are 120, 120, 60, and 60 whose sides all equal 8.
Guest
Nov 6, 2021
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273
1
inverse functions
If f(x) = 16/(5 + 3x), what is the value of $f^{-1}(-2)$?
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Guest
Nov 6, 2021
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594
1
Help! Due Today!
In Asha's science experiment, her bacteria are dying at a constant rate of an hour. If she drew a graph of the number of bacteria in her culture where represented the time in minutes since the start of the experiment and represented
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Guest
Nov 6, 2021
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173
0
Math problem
If x is an element of the set { -1, 1, 2} and y is an element of { -2, -1, 0, 1, 2, 3, 4}, how many distinct values of x^y are positive?
Guest
Nov 6, 2021
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233
1
Number Theory
What is the largest integer n such that 3^n is a factor of 1*3*5* ...*97*99*101*... *197*199?
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Guest
Nov 6, 2021
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271
1
Need help
The ratio of the number of pencils to the number of pens John bought was 3:2. Each pen cost $9 while each pencil cost 1/3 as much as a pen. He paid a total of $108 for all of them. How much more did John spend on the pens than on the pencils?
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Guest
Nov 6, 2021
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167
0
need help
The equation y = -6t^2 + 51t describes the height (in feet) of a projectile launched from the surface of Mars at 51 feet per second. In how many seconds will the projectile first reach 100 feet in height?
Guest
Nov 6, 2021
0
221
1
ᑭᒪᔕ ᕼEᒪᑭ
Amanda had 200 sweets lesser than Tom. Tom gave 3/5 of his sweets to Amanda. Amanda then gave 1/4 of her sweets to Tom. In the end, Amanda had 148 more sweets than Tom. How many sweets had Amanda at first?
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Guest
Nov 6, 2021
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206
0
Coordinates
Point A is at (3, -6) and point C is at (-5, 11).Find the coordinates of point B on AC such that the ratio of AB to BC is 2:1.
Guest
Nov 6, 2021
0
208
1
help asap!!
A stick has a length of $5$ units. The stick is then broken at two points, chosen at random. What is the probability that all three resulting pieces are shorter than $2$ units?A stick has a length of $5$ units. The stick is then broken at two points, chosen
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Guest
Nov 6, 2021
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179
0
Algebra problem
One person can do a certain job in six days, a second person can do the same job in two days, and a third person can do this job in eight days. How many days will they take to do the job together?
Guest
Nov 6, 2021
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438
5
+1124
Area of circle
Hi friends,
how would I calculate the area of a circle if only the height and length of a segment is given. Height is 10cm and length is 500mm. Please help...
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juriemagic
Nov 6, 2021
0
257
2
Im am confused can someone help me?
Given that 2^x=7, find the value of 4^x-1
I dont even know where to start :(
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Guest
Nov 6, 2021
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168
0
Complex Numbers
Suppose z and w are complex numbers. Prove that $z + \overline{z}$ and $w \overline{w}$ are real.
Guest
Nov 6, 2021
0
160
0
help algebra
Let x = 2001^1002 -2001^-1002 and y = 2001^1002 + 2001^-1002. Find 2x + 2y.
Guest
Nov 6, 2021
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