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}
227933 Questions
0
259
2
help coordinates
Find the area of the triangle bounded by the y-axis and the lines y - 3x = -2 and 3y + x = 10 .
●
●
Guest
Jan 21, 2022
0
150
0
help coordinates
What is the area of the region bounded by the three lines with equations 2x + y = 8, 2x - 5y = 20 and x + y = 12?
Guest
Jan 21, 2022
0
194
1
Help
The equation of the line joining the complex numbers $-5 + 4i$ and $7 + 2i$ can be expressed in the form
for some complex numbers $a$ and $b$. Find the ordered pair $(a, b)$.
●
Guest
Jan 21, 2022
+1
167
0
+66
please help asap
Andy needs a loan that he will not have to pay back for 3 years. The interest rate for the loan is 7.5% compounded quarterly. On the maturity date, wants Andy to make a single payment of no more than $12000. What is the most Andy
read more ..
marky
Jan 21, 2022
+1
170
0
+66
please help asap
Lana’s car needs major work done to it that will cost of $2240. She has a line of credit that she can use to pay for this. The line of credit has an interest rate of 9.8% compounded weekly. If Lana makes monthly payments of $80, how long
read more ..
marky
Jan 21, 2022
+1
158
0
+66
please help asap
Carson is planning to buy and install new tires and rims on his car. The cost is $1150, which he will use credit to pay. He wants to pay off the loan in 6 months and has two credit options
• The tire shop has financing at 16.8%, compounded
read more ..
marky
Jan 21, 2022
0
234
1
Coordinates
A point (3*sqrt(5), d + 6) is 3d units away from the origin. What is the smallest possible value of d?
●
Guest
Jan 21, 2022
0
186
1
Geometry
Let AB be a diameter of a circle, and let C be a point on the circle such that AC = 8 and BC = . The angle bisector of ACB intersects the circle at point M. Find CM.
read more ..
●
Guest
Jan 21, 2022
+1
267
2
help with geometry
In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = . Find PQ.
●
●
Guest
Jan 21, 2022
0
139
0
Algebra
Let a be a positive real number such that all the roots of x^3 + ax^2 + ax - 2a - 1 = 0 are real. Find the smallest possible value of a.
Guest
Jan 21, 2022
0
136
0
Counting
A committee is to be made up from a group of 10 candidates. The committee must consist of a chairperson, vice-chairperson and some (not necessarily nonzero) number of members-at-large. How many ways can the committee be chosen?
Guest
Jan 21, 2022
0
139
0
Number Theory
Given that x is a positive integer less than 6, how many values can k take on such that 3x = k (mod9) has no solutions in x?
Guest
Jan 21, 2022
-2
366
0
precalc
In triangle ABC, $\angle BCA = \pi/6$, AB = , and AC = 10.
Find the sum of all distinct possible values of BC. If there are no possible values, enter 0.
Guest
Jan 21, 2022
0
255
1
precalc
Find the 3 smallest positive x-intercepts of the graph of y = cos (12x)
and list them in increasing order
●
Guest
Jan 21, 2022
0
142
0
trig question
The value tan(7.5) can be expressed in the form sqrt(a) - sqrt(b), where a and b are positive integers. Find a + b.
Guest
Jan 21, 2022
0
176
1
trig
In right triangle BCD with angle D = 90 , we have BC = 8 and BD = . Find sin B.
●
Guest
Jan 21, 2022
0
162
0
Math problem
How many numbers can be expressed as the sum of two or more distinct elements of the set ?
Guest
Jan 21, 2022
+1
251
1
Geometry
Circles A, B, and C are externally tangent to each other. If AB = 14, BC = 18, and AC =, then find the radii of each of the circles.
●
Guest
Jan 21, 2022
0
148
0
Precalc
In right triangle ABC, we have AB = 10, BC = 24, and ABC = 90 degrees. If M is AC on such that is an angle bisector of ABC, then what is cos ABM?
Guest
Jan 21, 2022
0
269
2
Proportion (reposted)
Keith had 60 tokens when he went to the arcade, when he left the arcade he had 25. What percent of his tokens did he use? (Round to the nearest percent)
●
●
Guest
Jan 21, 2022
0
143
0
Number Theory
If a and b are positive integers such that gcd(a,b)=210, lcm[a,b]=210^2, and a < b, how many possible values are there for a?
Guest
Jan 21, 2022
0
182
1
factorize
Factorize px-qx +2p-2q.
●
Guest
Jan 21, 2022
0
243
1
Counting problem
How many cubic (i.e., third-degree) polynomials f(x) are there such that f(x) has nonnegative integer coefficients and f(1) = ?
●
Guest
Jan 21, 2022
0
264
1
Binomial theorem
What is the coefficient of x^3 in the expansion of (x + 2*sqrt(3))^5?
●
Guest
Jan 21, 2022
0
263
1
need help
r and s are the roots of 3x^2 + 4x - 12 = 0. Find r^2+s^2+2rs
●
Guest
Jan 21, 2022
«
latest
9116
9115
..
8271
8270
8269
8268
8267
..
2
1
»
Post New Question
8 Online Users
Top Users
+125577
CPhill
moderator
+118527
Melody
moderator
+36650
ElectricPavlov
+33513
Alan
moderator
+14770
asinus
moderator
+3135
admin
administrator
+2660
BuilderBoi
+2516
GingerAle
+1306
dolphinia
+1262
jimkey17
+1107
juriemagic
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.