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
229704 Questions
+1
456
2
+193
Functional Operations
If $\&x$ is defined as $\&x = x + 5$ and $\#x$ is defined as $\#x = x^2$, what is the value of $\#(\&4)$?
●
●
clairepow
Feb 14, 2021
0
307
1
counting
Suppose that I have $6$ different books, 2 of which are math books. In how many ways can I stack my 6 books on a shelf if I do not want the math books to be at the ends?
●
Guest
Feb 14, 2021
0
308
1
please help!
What is the value of x + y? I've tried to figure out how to solve this, but I'm not very good at it, any help would be amazing!!
read more ..
Logarhythm
●
Guest
Feb 14, 2021
+1
556
4
+7
TRIG MATH HELP PLZZZ
On a windy day you are flying a kite and notice that you have released 200 m of string. The height of the kite is 40 m in the air. Determine the angle of elevation the kite makes with the ground.
●
●
●
●
Lidarose
Feb 14, 2021
+1
553
1
+25
Help! - Number Theory
When the fraction is expressed in base is it terminating or repeating?
●
Doggo
Feb 14, 2021
0
262
1
HELPPP NEW ALGEBRA QUESTION
Express (4-5i) (-5+5i) in the form a+ bi, where a and b are integers and i^2 = -1
Plz help thx
●
Guest
Feb 14, 2021
0
1485
3
The legs of a right triangle measure 5 inches and 9 inches.
The legs of a right triangle measure 5 inches and 9 inches.
What is the measure of the smallest angle of the triangle?
Enter your answer, rounded to the nearest tenth of a degree, in the box.
●
●
●
Guest
Feb 14, 2021
0
849
1
In right ABC, the right angle is at C, m∠A=30∘, and AC=7√2 units.
In right △ABC, the right angle is at C, m∠A=30∘, and AC=7√2 units.
What is the perimeter of △ABC?
●
Guest
Feb 14, 2021
0
271
1
hlp hlp
If an object is dropped from a height of 198 feet, the function h(t)=-16t^2 +198 gives the height of the object after t seconds. When will the object hit the ground?
●
Guest
Feb 14, 2021
0
608
10
+16
Please Help Soon. I Do Not Know How to Do This Problem.
A Penteria is a special (fictional) kind of bacteria such that, regardless of the original population in a collection, the population increases by 5 every minute. Additionally, at the end of every hour, all but the initial ones die. If 137 Penteria are
read more ..
●
●
●
●
●
●
●
●
●
●
hmaser
Feb 14, 2021
0
538
1
help algebra
Thomas, a waiter at a local restaurant, is paid $\$4$ an hour plus tips. His friend Marie works at a local bookstore for $\$12$ an hour. Marie and Thomas worked the same number of hours. If Thomas made $\$120$ in tips and both made the same amount of money,
read more ..
●
Guest
Feb 14, 2021
0
357
1
+16
Please Help ASAP!
In base , there are exactly one hundred three-digit numbers whose digits are all distinct. (That's "one hundred" in the ordinary sense, .)
What is ?
●
hmaser
Feb 14, 2021
0
1126
4
Find the coefficient of x2in the expansion of (1 + 2x)^5(2-x)^6
I've never done this kind of problem before and my teacher's never taught it, she expects us to have learned it last year even though we didn't. Can I get a full explanation on how to do it?
read more ..
●
●
●
●
Guest
Feb 14, 2021
0
474
2
+193
Functional Operations
Let $a\star b = \dfrac{\sqrt{a+b}}{\sqrt{a-b}}$. If $ x \star 24 = 7$, find $x$.
●
●
clairepow
Feb 14, 2021
0
452
1
graphing
Given that the point (8,8) is on the graph of $y= 4 f\left( 2x\right)$, there is one point that must be on the graph of $y=f(x)$. What is the sum of coordinates of that point?
●
Guest
Feb 14, 2021
0
566
3
+193
Find the value of $a$ so that the system has no solutions.
Find the value of $a$ so that the system has no solutions.
\begin{align*}
y &= 11x+14 \\
2y-4 &= ax
\end{align*}
●
●
●
clairepow
Feb 14, 2021
Feb 13, 2021
0
330
1
help with counting
In a certain Algebra 2 class of 30 students, 7 of them play basketball and 11 of themplay baseball. There are 5 students who play both sports. What is the probability that a student chosen randomly from the class plays basketball or baseball?
●
Guest
Feb 13, 2021
0
472
1
ratio problem
Ms. Salazar's rice mixture consists of seven parts of white rice to three parts ofwild rice. If she makes 30 cups of the mixture, how many cups of white rice will she use? How many cups of wild rice will she use?
●
Guest
Feb 13, 2021
0
303
1
confusing word problem
On a rainy day, every kid at Margo's school brings a raincoat, an umbrella, or both. And 18% of the kids bring both. The total number of umbrellas brought is twice the total number of raincoats.
What percent of the kids bring only an umbrella?
read more ..
●
Guest
Feb 13, 2021
0
489
1
polygons
A square tile, a regular hexagon tile, an equilateral triangle tile, and a regular n-sided polygon tile share a common vertex. There are no gaps or overlaps between the tiles. What is n?
textot
●
Guest
Feb 13, 2021
0
255
0
counting
1. How many ways can you distribute 4 different balls among 4 different boxes, if at least one box must be empty?
2. How many ways can you distribute 4 identical balls among 4 identical boxes, if at least one box must be empty?
read more ..
Guest
Feb 13, 2021
0
256
0
system
Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 2xy.
Guest
Feb 13, 2021
0
274
1
system
Find the ordered pair (s, t) that satisfies the system
s/2 - 3t= -1
3t + 2s= 3
●
Guest
Feb 13, 2021
0
376
1
piecewise function
Let
f(x) = x+ 3 if x > 3
f(x) = x - 6 if -3 <= x <= 3
f(x) = 3x + b if x < -3.
read more ..
●
Guest
Feb 13, 2021
0
413
1
help with rectangle
In rectangle ABCD, shown here, CE is perpendicular to BD . If BC = sqrt(3) and DC = 2, what is CE?
●
Guest
Feb 13, 2021
«
latest
9187
9186
..
7375
7374
7373
7372
7371
..
2
1
»
Post New Question
1 Online Users
Top Users
+128053
CPhill
moderator
+118587
Melody
moderator
+33603
Alan
moderator
+14865
asinus
moderator
+3143
admin
administrator
+2436
GingerAle
+1703
tomtom
+1670
wiseowl
+1618
proyaop
+1248
bader
+1014
blackpanther
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.