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
272
1
Sequences
If the first term of AP is 4 and the sum of first five term is equal to one-fourth of the sum of the next five term, then find the 15th term?
●
Guest
Dec 26, 2021
0
175
0
Algebra
Solve x^4 + (2 - x)^4 = 34.
Guest
Dec 26, 2021
0
173
0
Orders of precendence
Compared to 'AnalogX Programmer's Calculator' and the `gcc` pre-processor (aka. compiler), why does this calculator give a different answer to "1 << 3 + 4 >> 2" ?
Guest
Dec 26, 2021
Dec 25, 2021
0
204
1
Probability
We draw a card from a standard deck. What is the probability that it is a Jack, Queen, King, or a red Ace?
●
Guest
Dec 25, 2021
0
261
2
Geometry
Let a triangle ABC with BC = 6 cm, and the area of 30 cm2. A square PQRS is inscribed so that points S and R is on BC, Q on AC, and P on AB respectively. Find the side length of the square PQRS.
read more ..
●
●
Guest
Dec 25, 2021
0
193
1
Algebra
Give an example of a quadratic function that has zeroes at x=2 and x=4, and that takes the value 6 when x=8.
Enter your answer in the expanded form "ax^2 + bx + c", where a,b,c are replaced by appropriate numbers.
●
Guest
Dec 25, 2021
0
215
3
Algebra
The age of a tortoise is 52 years more than the combined age of two elephants. In 10 years, the tortoise will be twice as old as the two elephants combined. How old is the tortoise now?
●
●
●
Guest
Dec 25, 2021
0
166
0
Piecewise function
Let
f(x) = x^2 - 4 if x >= -4
f(x) = 3x + 1 if x < -4
read more ..
Guest
Dec 25, 2021
0
207
1
Math
Chocs-O-Lots candy bars are on sale 5 for $3. How much would it cost Jeneatte to buy 100 candy bars to pass out to the neighborhood children for Halloween?
●
Guest
Dec 25, 2021
0
275
1
Function
Let
f(x) = 2x + 1 if x <= 3
f(x) = 8 - x if x > 3
read more ..
●
Guest
Dec 25, 2021
0
222
1
Algebra
When the expression -2x^2 - 20x - 53 + 14x + 17 is written in the form a(x + d)^2 + e, where a, d, and e are constants, then what is the sum a + d + e?
●
Guest
Dec 25, 2021
0
220
1
help
A sum of money was shared between Aaron and Jason in the ratio 2:3. Jason gave 1/4 of his share to Aaron. What is the new ratio of Aaron's share to Jason's share of the money?
●
Guest
Dec 25, 2021
0
202
2
Geometry
A sheet of 8-inch by 10-inch paper is placed on top of a sheet of 9 1/2-inch by 11-inch paper, as shown. What is the area of the region of overlap in square inches?
read more ..
●
●
Guest
Dec 25, 2021
0
206
1
Function
Find the set of values a for which the range of the function f(x) = (x^2 + a)/(x + 7) is the set of all real numbers.
●
Guest
Dec 25, 2021
0
233
1
3d geometry i guess
Four balls of radius 1 are all tangent to each other. What is the radius of the smallest sphere that encloses them?
please show all steps
●
Guest
Dec 25, 2021
0
208
2
Number Theory
The letters A, B, C, D, E, and F represent digits and ABC,DEF represents a positive six-digit integer. What is the number ABC,DEF if 4(ABC,DEF) = 9(DEF,ABC)?
●
●
Guest
Dec 25, 2021
0
219
3
Probability
When three standard dice are tossed, the numbers x, y, and z are obtained. Find the probability that xyz=18. If you have an answer please explain it, without an explanation the problem is useless to my education
●
●
●
Guest
Dec 25, 2021
0
200
1
Rates
All members of our painting team paint at the same rate. If 20 members can paint a 6000 square foot wall in 20 minutes, then how long would it take the 20 members to paint a 5000 square foot wall, in minutes?
●
Guest
Dec 25, 2021
0
227
1
log3(-5)
log3(-5)
●
Guest
Dec 25, 2021
0
275
1
Algebra
What is the length of the segment of the number line whose endpoints satisfy x^2 - 16x + 3 = 0?
●
Guest
Dec 25, 2021
0
209
1
Polynomial
If f(x) is a monic quartic polynomial such that f(-1) = -1, f(2) = -4, f(3) = -9, and f(4) = -16, find f(1).
●
Guest
Dec 25, 2021
0
276
1
Precalc
Find sin(2A) if sin(A) = 1/4 and 0 <= A <= pi/2.
●
Guest
Dec 25, 2021
0
222
1
Probability question
Three fair dice are rolled. What is the probability that the sum of the rolls is a multiple of $4$?
●
Guest
Dec 25, 2021
0
209
4
Geometry
Let XY be a tangent to a circle, and let XBA be a secant of the circle, as shown below. If AX = 16 and XY = 9, then what is AB?
read more ..
●
●
●
●
Guest
Dec 25, 2021
0
275
1
help plz
Line m has the equation y = 3x + 5. Line n has the equation y = kx - 7. Lines m and n intersect at the point (-4, -7). What is the value of k?
●
Guest
Dec 25, 2021
«
latest
9188
9187
..
8138
8137
8136
8135
8134
..
2
1
»
Post New Question
2 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.