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
229743 Questions
0
54
0
proportion
Each gallon of paint covers 200 square feet. I have to paint one side of a wall that is 15 meters tall and meters long. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons I can buy
read more ..
Guest
Jun 2, 2023
0
44
0
percent
In a store window, there was a box of berries having a total weight of 200 kg. The berries were 99% water, by weight. After two days in the sun, the water content of the berries was only 90%, by weight. What was the total weight of
read more ..
Guest
Jun 2, 2023
0
43
0
help me
In Linguistics 101, the ratio of the number of juniors to the number of seniors is 3:2. When six more juniors join the class, and one senior drops the class, the ratio of the number of juniors to the number of seniors becomes . How many
read more ..
Guest
Jun 2, 2023
0
49
0
solve
Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 7 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have times as much
read more ..
Guest
Jun 2, 2023
0
51
0
help plz
The system of equations
\[\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 1\]
has exactly one solution. What is $z$ in this solution?
Guest
Jun 2, 2023
0
44
1
system
Find the ordered triple (p,q,r) that satisfies the following system:
p - 2q = 3
q - 2r = -2 + q
p + r = 9 + p
read more ..
●
Guest
Jun 2, 2023
0
45
0
right triangles
Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.
Guest
Jun 2, 2023
0
52
1
algebra
Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas.
read more ..
●
Guest
Jun 2, 2023
0
29
4
help plz
Let $a$ and $b$ be real numbers such that $a^3 + 3ab^2 = 679$ and $3a^2 b + b^3 = 615.$ Find $a - b.$
Thanks!
●
●
●
●
Guest
Jun 2, 2023
0
49
0
help plz
Let a and b be real numbers such that a-b=4 and a^3 - b^3=0
(a) Find all possible values of ab
(b) Find all possible values of a+b
(c) Find all possible values of a and b
Guest
Jun 2, 2023
0
50
0
system
At a cafeteria, Mary orders two pieces of toast and a bagel, which comes out to $3.15. Gary orders a bagel and a muffin, which comes out to $3.50. Larry orders a piece of toast, two bagels, and three muffins, which comes out to $8.15. How many cents does
read more ..
Guest
Jun 2, 2023
0
53
1
How many ounces are in a gallon?
How many ounces are in a gallon?
●
Guest
Jun 2, 2023
0
49
1
ratios
A bag contains yellow, green, blue, and white marbles. The ratio of yellow, green, blue, and white marbles is 1:2:3:4. If the bag contains 180 marbles, then how many blue marbles are there?
●
Guest
Jun 2, 2023
0
48
0
polygon
Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on line AB with a vertex C next to A. Find angle BCD in degrees.
Guest
Jun 2, 2023
Jun 1, 2023
0
52
1
+25
I need help
Function g is defined as follows:
\[g(x) = \left\{
\begin{array}{cl}
5x^2 & \text{if } x \le -3, \\
21+x& \text{if }-3 < x \le 10, \\
2-\sqrt{x}& \text{if }x > 10.<#> \end{array}\right.\]
read more ..
●
Guythatneedshelp
Jun 1, 2023
«
latest
9188
9187
..
8924
8923
8922
8921
8920
..
2
1
»
Post New Question
1 Online Users
Top Users
+128089
CPhill
moderator
+118587
Melody
moderator
+33603
Alan
moderator
+14865
asinus
moderator
+3143
admin
administrator
+2436
GingerAle
+1703
tomtom
+1670
wiseowl
+1618
proyaop
+1252
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.