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
234777 Questions
0
284
0
function
The function f:R -> R satisfies
f(x)f(y) = f(x + y)
for all real numbers x and y. Find all possible functions f.
Guest
Jan 24, 2021
0
303
1
algebra
Determine the unique pair of real numbers (x,y) satisfying (3x^2 + 5)(2y^2 + 8) = 40.
Enter your answer as an ordered pair in the format (x,y), where x and y are replaced by appropriate numbers.
●
Guest
Jan 24, 2021
+1
565
13
Math
2 snowplows can clear a road 12km x 4 m in 3 hours. How long will take for 10 snowplows to clear a road 2km x 12m.
My solution is 18 minutes but in book answer is 9 minutes. Am I wrong or there is error in book?
read more ..
●
●
●
●
●
●
●
●
●
●
●
●
●
Guest
Jan 24, 2021
0
442
1
quadratic
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 180 feet in height?
●
Guest
Jan 24, 2021
+1
551
1
+328
Linda's drive
Linda drove 50 miles from San Jose to San Francisco in 90 minutes. For the first 30minutes, without much traffic, her average speed was 60 miles an hour. In the second 30 minutes, due to a traffic accident along US 101, her average speed dropped to 35miles
read more ..
●
Potatobird
Jan 24, 2021
+1
504
1
+328
Julian's art
For his art project, Julian wanted to make a pixel art by completely covering the 2-feet-by-3-feet poster board with colored stickers that measure 1.5-inches-by-1.5-inches without any overlap.How many stickers would Julian need?
read more ..
●
Potatobird
Jan 24, 2021
0
443
2
question on incircle
Triangle ABC is equilateral with side length 1. Let P be a point on the incircle of triangle ABC. Compute PA^2 + PB^2 + PC^2.
●
●
Guest
Jan 24, 2021
0
469
0
solid mensuration
he base of a right pyramid is a regular hexagon of side 4cm and its slant surfaces are inclined to the horizontal at an angle of 30 degrees. Find the volume of the pyramid. *
a.27.713 cu. cm
b.28.87 cu. cm
read more ..
Guest
Jan 24, 2021
0
755
1
how to do square root
The quantity sqrt(45) + 2*sqrt(5) + sqrt(360)/sqrt(2) can be expressed as sqrtN, where N is an integer. Find N.
●
Guest
Jan 24, 2021
-2
399
0
+5
Couple of quadratic questions
Deleted.
We are not here to do all your homework for you.
COOKIEnomnom
Jan 24, 2021
+1
297
0
heeelp
Right angled triangle BCA. The points D and E lie on the hypotenuse such that AD= DE=EB.
Also CD= 7, CE=9
What is the length of the hypotenuse AB?
read more ..
Guest
Jan 24, 2021
+1
474
2
need help
Jennifer rode her bike at 12 miles per hour for 4 hours, then put her bike down and began walking at 2 miles per hour. Thomas started walking at 4 miles per hour along the same path at the same time that Jennifer started biking. When he reached the bike,
read more ..
●
●
Guest
Jan 24, 2021
+1
434
1
percent
We are making a juice. It contains 30% cherry juice, 60% orange juice and 10% water. Unfortunately, the prices have risen. The price of the cherry juice went up by 20% and price of the orange has risen up by 25%. By how many percent has the price risen
read more ..
●
Guest
Jan 24, 2021
0
701
1
+23
helppp
Find $1_6 + 2_6 + 3_6 + \cdots + 45_6$. Express your answer in base $6$.
●
ryan1207
Jan 24, 2021
0
298
1
Pls help :)
Let $f$ be defined by \[f(x) = \left\{ \begin{array}{cl} 3-x & \text{ if } x \leq 3, \\ -x^3+2x^2+3x & \text{ if } x>3. \end{array} \right.\]Calculate $f^{-1}(0)+f^{-1}(6)$.
My go at it:
First I attacked the $f^{-1}(0)$,
read more ..
●
Guest
Jan 24, 2021
0
512
4
HELP ASAP!
Let u and v be the solutions to Find
●
●
●
●
Guest
Jan 24, 2021
-1
421
4
Help!
The roots of are a and b. Compute .
●
●
●
●
Guest
Jan 24, 2021
0
442
1
Math
A diver descended at a constant rate of 17.34 feet every 3 minutes. Which of the following is true?
A. After one minute, the diver was at -5.78 feet.
read more ..
●
Guest
Jan 24, 2021
0
426
1
math question
The figure shows an incircle of a triangle \(ABC\) with sides 6-12-17. Let \(P \) and \(Q\) be the points on the side lengths \(AB\) and \(AC\) respectively, such that \(PQ\) is tangent to the incircle. Find the perimeter of the triangle \(APQ\).
read more ..
●
Guest
Jan 24, 2021
+3
908
1
+239
How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions? 1. x is a multiple of 4. 2. x is a multiple
How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions?
1. x is a multiple of 4.
2. x is a multiple of 6.
MooMooooMooM
●
DewdropDancer
Jan 24, 2021
0
394
1
linear inequality
Find a linear inequality with the following solution set. Each grid line represents one unit.
●
Guest
Jan 24, 2021
0
518
1
need help
In the table, the sum of the numbers in each row, column and diagonal is the same. What is the value of P+Q+R+S?
●
Guest
Jan 24, 2021
0
422
2
Help quick
The quadratic equation $2x^2 + bx + 18 = 0$ has a double root. Find all possible values of $b.$
●
●
Guest
Jan 24, 2021
Jan 23, 2021
0
612
1
geometry
Suppose ABCD is an isosceles trapezoid with bases AB and CD and sides AD and BC such that CD > AB. Also suppose that CD = AC and that the altitude of the trapezoid is equal to AB. Compute AB/CD.
read more ..
●
Guest
Jan 23, 2021
«
latest
9390
9389
..
7297
7296
7295
7294
7293
..
2
1
»
Post New Question
2 Online Users
Top Users
+118653
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2973
TitaniumRome
+2651
LiIIiam0216
+2489
GingerAle
+1887
tomtom
+1832
NotThatSmart
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.