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
230936 Questions
0
1146
2
Is (5,0) a solution of y<-x+5
The question said is (5,0) a solution of the graphed inequality, I figured the inequality to be y<-x+5. Is (5,0) a solution?
●
●
Guest
Jul 7, 2018
0
632
2
Stuck on how to figure this out. Please help on pointing me in the right direction.
This is for Psy Statistics class and I'm struggling on how to solve problems like this one below?
Melody
●
●
Guest
Jul 7, 2018
0
522
1
4 times a number is greater than 2/3 of the number by 110.Find the number.
4 times a number is greater than 2/3 of the number by 110.Find the number.
●
Guest
Jul 7, 2018
0
1274
1
+1243
Help!
The operation $*$ is defined for non-zero integers as follows: $a * b = \frac{1}{a} + \frac{1}{b}$. If $a+b = 9$ and $ a \times b = 20$, what is the value of $a*b$? Express your answer as a common fraction.
Omi67
●
Lightning
Jul 7, 2018
0
661
1
+1243
Help!
Suppose the function $f(x)$ is defined explicitly by the table $$\begin{array}{c || c | c | c | c | c} x & 0 & 1 & 2 & 3 & 4 \\ \hline f(x) & 0 & 0 & 1 & 3 & 6 \end{array}$$ This function is defined only for the values
read more ..
●
Lightning
Jul 7, 2018
0
604
3
What is the sum of all positive integers v for which lcm[v,20]=60?
What is the sum of all positive integers v for which lcm[v,20]=60?
●
●
●
Guest
Jul 7, 2018
0
635
2
One question
How many ways can you go up a 10 step staircase if you have very long legs and make 1, 2, OR 3 step moves?
●
●
Guest
Jul 7, 2018
Jul 6, 2018
0
1294
2
help me
At the beginning of a program, the 105 members of a marching band stand in a rectangular formation named Formation A. All of the band members then move into Formation B, which is a different rectangular formation with six more rows, but with two fewer band
read more ..
●
●
Guest
Jul 6, 2018
-1
1242
3
What is the units digit of 1! + 2! + 3! + 4! + ... + 50!
What is the units digit of 1! + 2! + 3! + 4! + ... + 50!
●
●
●
Guest
Jul 6, 2018
0
858
1
please help how to do this
Points A, B, C, and D are located on segment AB such that AB = 3AD = 6BC. If a point is selected at random on segment AB, what is the probability that it is between C and D? Express your answer as a common fraction.
read more ..
hectictar
●
Guest
Jul 6, 2018
0
429
1
Math Word Problem
How many ways can you go up a 10 step staircase if you have very long legs and make 1, 2, OR 3 step moves?
If you divide 3 to the power of 99 by 7 what is the remainder?
read more ..
●
Guest
Jul 6, 2018
0
414
0
Two Part Question-Thanks so Much
Suppose you want to go up an 11 step staircase again, but this time you have to land on the 6th step on your way up. NOW how many ways can you get to the top?
Same as the problem above, but
read more ..
Guest
Jul 6, 2018
0
334
0
Two Questions
How many ways are there up an 11 step staircase if you can go one or two steps at a time?
Kendal has 13 pairs of pants and 8 different shirts, how many ways can she combine them?
Guest
Jul 6, 2018
0
1003
1
help me
Let an integer x be bad if there is no way to insert a colon among the digits of x to form a time of day (on a twelve-hour, digital clock), and good if a colon can be inserted to form a time. For example, 100 is good because we can write 1:00,
read more ..
●
Guest
Jul 6, 2018
0
732
1
+1243
Help
Let \[f(x) = \frac{3x - 7}{x + 1}.\] Find the domain of $f$. Give your answer as an interval.
Please give the answer in interval notation! I tried (-inf, 3)U(3, inf) but it is not the answer.
read more ..
●
Lightning
Jul 6, 2018
0
2726
1
Trig
In the diagram below, $WXYZ$ is a trapezoid such that $\overline{WX}\parallel \overline{ZY}$ and $\overline{WY}\perp\overline{ZY}$. If $YZ = 12$, $\tan Z = 1.5$, and $\tan X = 3$, then what is the area of $WXYZ$?
read more ..
Omi67
●
Guest
Jul 6, 2018
0
1490
2
+1243
Help!
The operation $*$ is defined for non-zero integers as follows: $a * b = \frac{1}{a} + \frac{1}{b}$. If $a+b = 9$ and $ a \times b = 20$, what is the value of $a*b$? Express your answer as a common fraction.
●
●
Lightning
Jul 6, 2018
0
353
0
One Question
One morning you leave base camp at 8:00 a.m. and hike to the top of a mountain where you will spend the night.
You arrive at 6:00 p.m. and have a nice dinner at the lodge. The next morning after a truly incredible breakfast you head back down at
read more ..
Guest
Jul 6, 2018
0
453
1
One Quick question-Thanks A Lot
The divisors of a number are the positive whole numbers that divide into it evenly. For example the divisors of 6 are: 1, 2, 3, and 6.
Notice that 6 has four divisors. If you count how many divisors the number has your answer
read more ..
●
Guest
Jul 6, 2018
-1
864
1
+84
Pls Help
Use the Euclidean algorithm to find integers x and y such that 164x + 37y = 1. State your answer as a list with x first and y second, separated by a comma.
●
FiestyGeco
Jul 6, 2018
0
619
2
How to do this
Point (x,y) is randomly picked from the rectangular region with vertices at (0,0), (2009,0), (2009,2010), and (0,2010). What is the probability that x>7y? Express your answer as a common fraction.
●
●
Guest
Jul 6, 2018
0
876
2
Right-Triangle Trig
In right triangle $XYZ$, shown below, what is $\sin{X}$?
●
●
Guest
Jul 6, 2018
0
1573
15
HELP
There are 4! (or 24) "words" that can be formed using each of the letters a, b, c and d once. If these "words" are alphabetized, which one is 17th?
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Guest
Jul 6, 2018
+1
932
1
+1243
HELP!
Let $c( a, b, c ) = \frac{a}{b} + \frac{b}{c} + \frac{c}{a}$. Compute $c(2, 12, 9)$.
●
Lightning
Jul 6, 2018
«
latest
9236
9235
..
5419
5418
5417
5416
5415
..
2
1
»
Post New Question
12 Online Users
Top Users
+128598
CPhill
moderator
+118608
Melody
moderator
+33616
Alan
moderator
+14929
asinus
moderator
+9589
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1592
bader
+1145
parmen
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.