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
230619 Questions
0
371
1
+41
Quick Question :)
If $f(0)=0$, $f(1)=2$, $f(2)=5$ and $f(x)=ax^2+bx+c$, what is the value of $f(3)$?
●
CENTTRAL
Jul 16, 2021
0
344
1
Quick Question :)
If $f(0)=0$, $f(1)=2$, $f(2)=5$ and $f(x)=ax^2+bx+c$, what is the value of $f(3)$?
●
Guest
Jul 16, 2021
0
365
1
Urgent question
The function \[f(\sqrt{x + 1}) = \frac{1}{x}\] satisfies
for all $x \ge -1,$ Find $f(2)$.
●
Guest
Jul 16, 2021
-1
412
3
+41
PLZ HELP!!!!!
Find all complex numbers such that .
Write your solutions in form, separated by commas. So, "1+2i, 3-i" is an acceptable answer format, but "2i+1; -i+3" is not. (Don't include quotes in your answer.)
Note: This problem is
read more ..
●
●
●
CENTTRAL
Jul 16, 2021
-1
351
2
Rationalize
Rationalize the denominator for each of the following expressions.
a. 1/(2 + √3)
read more ..
●
●
Guest
Jul 16, 2021
0
336
2
Money
Alex spent 35 dollars on cookies. If the cookies were 1 dollar cheaper, he would be able to buy 4 more cookies. How many cookies did alex buy? Reduce the problem to a quadratic equation in terms of c the number of cookies by eliminating p the price of a
read more ..
●
●
Guest
Jul 16, 2021
0
350
2
parabolas
Graph y = -2x^2 + 5x and y = -2x^2 + 5x - 2 on the same graph
●
●
Guest
Jul 16, 2021
0
408
1
Help if you can please :)
A stuntman jumped from an elevation of 500 m and was in free fall before he opened his parachute. His elevation, h meters, t seconds after jumping is modeled by these equations:
h=-4.9t2+2t+500 before the parachute was opened
read more ..
●
Guest
Jul 16, 2021
0
353
2
Geometry
In the figure below, isosceles triangle ABC with base AB has altitude CH = 24 cm, DE = GF, HF = 12 cm, and FB = 8 cm. find area of CDEFG
●
●
Guest
Jul 16, 2021
0
437
1
+313
Mathematics
Erin and Evan had an equal number of baseball cards. After Erin gave away 37 baseball cards and Evan gave away 57 baseball cards, Erin had 2 times as many baseball cards as Evan. How many baseball cards did each have at first?
●
apsiganocj
Jul 16, 2021
0
440
1
+313
ratios
The ratio of Greta's jellybeans to Devin's jellybeans was 5:2. After Greta ate 36 jellybeans, the ratio became 1:2. How many jellybeans did Greta have at first?
●
apsiganocj
Jul 16, 2021
0
426
1
+313
Mathematics
In order to purchase a piece of scientific equipment within the next 16 months, in time for a large project planned, the current profit, $241,488 from sample analyses conducted by your laboratory this month must be allocated to high interest investments.
read more ..
●
apsiganocj
Jul 16, 2021
0
376
1
+103
Fractions
Willie left home with a bunch of flowers for Suzabelle. Halfway to her house, he sneezed very hard and knocked the petals off 2/3 of them. He threw away the petal-less ones and hastily went home and added 4 more to the remaining bunch. Opening the
read more ..
apsiganocj
●
Robtlukas
Jul 16, 2021
0
304
1
Complex Numbers
If Q = 11 - 5i, E = 3 - 2i, and D = 2i, find QED.
MathProblemSolver101
●
Guest
Jul 16, 2021
0
310
1
Complex Numbers
Express (4 - 5i)(5 + 5i) in the form a + bi where a and b are integers and i^2 = -1.
MathProblemSolver101
●
Guest
Jul 16, 2021
0
260
1
algebra word problem help
Water pressure varies linearly with the depth of submersion. The pressure at the surface is 14.7 pounds per square inch. Given that a diver experiences approximately 58.8 pounds per square inch of pressure at a depth of 100 feet, what pressure will a submarine
read more ..
●
Guest
Jul 16, 2021
0
331
2
number theory help asap!
There are six available colors. find the number of ways to color the unit cells of a 2 x 2 grid such that no two adjacent cells are of the same color. solve the problem in two ways: by considering the number of colors used and by coloring the squares one
read more ..
●
●
Guest
Jul 16, 2021
0
390
1
In 2D a line in xy-coordinate system can be represented by an equation a*x+b*y=c, where a and b
In 2D a line in xy-coordinate system can be represented by an equation a*x+b*y=c, where a and b
A)Can be a any real number
B) must be zero
C) can be only integers
D) can be any real number but not both zero
read more ..
●
Guest
Jul 16, 2021
0
433
1
Intersection of a 2D plane and double napped cone such that the plane does not pass through the vertex of cone and intersect perpendicularly
Intersection of a 2D plane and double napped cone such that the plane does not pass through the vertex of cone and intersect perpendicularly is
A)a circle
B)a point
C)a pair of intersecting lines
●
Guest
Jul 16, 2021
0
644
1
What is the coefficient of x^3 in the expansion of (x+2*sqrt3)^7?
What is the coefficient of x^3 in the expansion of (x+2*sqrt3)^7?
●
Guest
Jul 16, 2021
0
371
2
Challenging problem with divisors and multiples and probabilty
We choose a positive divisor of 20^20 at random (with all divisors equally likely to be chosen). What is the probability that we chose a multiple of 10^10?
●
●
Guest
Jul 16, 2021
0
744
2
+56
In the diagram below, $\angle PQR = \angle PRQ = \angle STR = \angle TSR$, $RQ = 8$, and $SQ = 2$. Find $PQ$.
In the diagram below, $\angle PQR = \angle PRQ = \angle STR = \angle TSR$, $RQ = 8$, and $SQ = 2$. Find $PQ$.
●
●
LaTeX
Jul 16, 2021
0
367
3
+56
Help plz
In triangle $ABC,$ $AB = 10,$ $BC = 24,$ and $AC = 26.$ Find the length of the shortest altitude in this triangle.
●
●
●
LaTeX
Jul 16, 2021
«
latest
9223
9222
..
7870
7869
7868
7867
7866
..
2
1
»
Post New Question
0 Online Users
Top Users
+128475
CPhill
moderator
+118609
Melody
moderator
+33616
Alan
moderator
+14915
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1484
bader
+1101
parmen
+1032
kittykat
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.