Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
Post New Question
All Questions
+0
234799 Questions
0
453
1
PLZHELP
If $-5\leq a \leq -1$ and $1 \leq b \leq 3$, what is the least possible value of $\displaystyle\left(\frac{1}{a}+\frac{1}{b}\right)\left(\frac{1}{b}-\frac{1}{a}\right) $? Express your answer as a common fraction.
●
Guest
Jan 14, 2021
0
281
0
3d geo
Let ABCDEFGH be a rectangular prism, where EF = 4, EH = 15, and EA = 6. Find the volume of pyramid CFAH.
Guest
Jan 14, 2021
0
495
1
quadrilateral
In quadrilateral ABCD, it is given that \(\angle A = 120^{\circ}\), angles B and D are right angles, AB = 13, and AD = 46. Then what is AC?
●
Guest
Jan 14, 2021
0
408
0
+296
Trig Question
The range of a secant function is(−∞,−11]∪[5,∞). The equations of two consecutive asymptotes of the function are 𝑥=−𝜋and 𝑥=𝜋. The function is a reflection over the x-axis. Use 𝑓(𝑥)=𝑎𝑠𝑒𝑐(𝑘𝑥)+ℎ.
What is the “h” value?
read more ..
lovesosa12
Jan 14, 2021
0
321
1
simplify
Simplify $\large \frac { \sqrt { 49x } }{ \sqrt { 21y } } \div \frac { \sqrt { 8z } }{ \sqrt { xyz } } \div \frac { \sqrt { 338x } }{ \sqrt { 18y } } $
●
Guest
Jan 14, 2021
0
690
3
+6
Need help!
Hi! I'm a new member and I need some help on this problem:
In the diagram, square ABCD has sides of length 4, and triangle ABE is equilateral. Line segments BE and AC intersect at P. Point Q is on BC so that PQ is perpendicular
read more ..
●
●
●
QueenOfDiamonds808
Jan 14, 2021
0
399
1
help needed
In the figure, \(AB\) is parallel to \(CD\). If \(AB =4 \text{ cm}\) and \(AD=2 \text{ cm}\), angles \(D\) and \(C\) are \(30^\circ\) and \(60^\circ\) respectively. Find the area of the figure (in \(\text{cm}^2\)).
I've been stuck
read more ..
●
Guest
Jan 14, 2021
+1
444
1
+44
Algebra Help
If 8-x2-y2-2xy=0, for real numbers x and y, what is the value of |x+y|? Express your answer in simplest radical form.
●
GR0001
Jan 14, 2021
0
443
1
algebra
Our badminton team has finished 75% of its season, during which we won 30% of the games we played. What percent of the remainder of our games must we win in order to finish the season with the same number of wins as losses?
●
Guest
Jan 14, 2021
0
304
0
non-congruent triangles
How many non-congruent triangles have vertices at three of the eight points in the figure?
Guest
Jan 14, 2021
0
399
1
pentagon
The picture shows a regular pentagon ABCDE. Find the ratio of the area of triangle ABD to the area of pentagon ABCDE.
●
Guest
Jan 14, 2021
0
367
1
numbers
Given positive integers x and y such that x does not equal y and 1/x + 1/y = 1/28 , what is the smallest possible value for x+y ?
●
Guest
Jan 14, 2021
0
1004
4
+33
What are the last two digits in the sum of factorials of the first 100 positive integers?
What are the last two digits in the sum of factorials of the first 100 positive integers?
●
●
●
●
guest.exe
Jan 14, 2021
0
507
3
+11
Can anyone do this problem
solve this problem plz!
https://docs.google.com/document/d/1-eBRfV_S8F4TmPyykRdCHZI_7l8gQXWB-weELorikew/edit
●
●
●
angelthecutehamster
Jan 14, 2021
+1
341
1
Astronomy question
Suppose the width of your index finger is 0.7 inches and the length of your arm is 32.2 inches. Based on these measurements, what will be the angular width (in degrees) of your index finder held at arm’s length?
anyone know this?
read more ..
●
Guest
Jan 14, 2021
+1
472
2
help geo
Let ABCD be a square. Three parallel lines x,y, and z pass through A, B and C respectively. The distance between x and y is 4 and the distance between y and z is 5. Find the area of the square.
●
●
Guest
Jan 14, 2021
0
431
2
I need HELP!!
If is twice , then what is in terms of ?
●
●
Guest
Jan 14, 2021
0
284
0
coordinate lines
Two lines pass through the point (–6, 7) and each is a distance of 2 from the origin at their closest to the origin. What is the sum of the slopes of these lines?
Guest
Jan 14, 2021
0
380
1
+4
Write the slope-intercept form of the equation of the line shown in the graph.
Write the slope-intercept form of the equation of the line shown in the graph.
●
mwallace
Jan 14, 2021
0
459
1
Does you calculator show if a decimal is rational or irrational?
How do you tell if a decimal keeps going.
●
Guest
Jan 14, 2021
0
454
4
please help
In a circle with center \(O\) and radius \(5\), \(AB\) is a diameter. Points \(C\) and \(H\) on the circumference are such that \(CB=1.25\) and \(OH\) and \(CB\) are parallel . Find the length of \(CH\).
read more ..
jugoslav
●
●
●
●
Guest
Jan 14, 2021
0
396
2
Dilations
What really confuses me is just the center part, it messes up my calculations. Could someone help?
●
●
Guest
Jan 14, 2021
«
latest
9390
9389
..
7270
7269
7268
7267
7266
..
2
1
»
Post New Question
4 Online Users
Top Users
+118654
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2651
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1836
NotThatSmart
+1758
bader
Sticky Topics
Some guidelines for question askers.
What is Happening 5
Again a number puzzle. Multiply in writing.
Loads of fun printable number and logic puzzles
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
How to upload a picture.
If a question is ticked that does not mean you cannot continue it.
Should you consider anything before you answer a question?
Geometry Thread
PUZZLES
LaTex Coding
/calculator/bsh9ex1zxj
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.