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
237783 Questions
0
37
0
+1309
Algebra
The solutions to
2x^2 - 10x + 13 = -6x^2 - 18x - 15
are a+bi and a-bi, where a and b are positive. What is a\cdot b?
AnswerscorrectIy
Jan 28, 2025
0
24
2
+1309
Algebra
Find all the solutions to
\frac{x+4}{x+5} = \frac{x-3}{2} + \frac{x + 7}{5}
●
●
AnswerscorrectIy
Jan 28, 2025
0
32
1
+1309
Algebra
The roots of Ax^2+Bx+1 are the same as the roots of (x - 2)(x + 2). What is A+B?
Iampanda
●
AnswerscorrectIy
Jan 28, 2025
Jan 27, 2025
0
32
1
+1733
Geometry
In triangle $ABC$, point $D$ is on side $\overline{AC}$ such that line segment $\overline{BD}$ bisects $\angle ABC$. If $\angle A = 45^\circ$, $\angle C = 45^\circ$, and $AC = 12$, then find the area of triangle $ABD$.
●
parmen
Jan 27, 2025
0
37
0
+1733
Geometry
In triangle $ABC,$ $\angle B = 90^\circ.$ Point $X$ is on $\overline{AC}$ such that $\angle BXA = 90^\circ,$ $BC = 15,$ and $CX = 5$. What is $BX$?
parmen
Jan 27, 2025
0
26
1
+1733
Geometry
In triangle $ABC,$ $AB = 15,$ $BC = 9,$ and $AC = 10.$ Find the length of the shortest altitude in this triangle.
●
parmen
Jan 27, 2025
0
34
0
+1733
Geometry
In triangle $ABC,$ the angle bisector of $\angle BAC$ meets $\overline{BC}$ at $D.$ If $\angle BAC = 60^\circ,$ $\angle CAD = 45^\circ,$ and $AD = 24,$ then find the area of triangle $ABC.$
parmen
Jan 27, 2025
+1
25
1
+460
Algebra
Let $a$ and $b$ be real numbers, where $a < b$, and let $A = (a,a^2)$ and $B = (b,b^2)$. The line $\overline{AB}$ (meaning the unique line that contains the point $A$ and the point $B$) has slope $2$. Find $a + b$.
●
MEMEG0D
Jan 27, 2025
+1
32
2
+460
Algebra
Let $O$ be the origin. Points $P$ and $Q$ lie in the first quadrant. The slope of line segment $\overline{OP}$ is $4,$ and the slope of line segment $\overline{OQ}$ is $5.$ If $OP = OQ,$ then compute the slope of line segment $\overline{PQ}.$
Note:
read more ..
●
●
MEMEG0D
Jan 27, 2025
+4
34
1
+113
algebra
what is the answer 2x-49y+21x=-7
●
thatgirlaj
Jan 27, 2025
0
36
0
+460
Algebra
Points $A,$ $B,$ and $C$ are given in the coordinate plane. There exists a point $Q$ and a constant $k$ such that for any point $P$,
PA^2 + PB^2 + PC^2 = 3PQ^2 + k.
If $A = (7,-11),$ $B = (10,13),$ and $C = (18,-22)$, then find the constant
read more ..
MEMEG0D
Jan 27, 2025
+1
21
1
+805
Algebra
The graph of the equation
4x^2 - 12x + 4y^2 + 16y + 17 = -4x + 2y + 5
is a circle. Find the radius of the circle.
●
bingboy
Jan 27, 2025
+1
19
1
+805
Algebra
All members of our painting team paint at the same rate. If $10$ members can paint a $1000$ square foot wall in $10$ minutes, then how long would it take for $5$ members to paint a $1000$ square foot wall, in minutes?
●
bingboy
Jan 27, 2025
+1
17
1
+805
Algebra
In a store window, there was a box of berries having a total weight of 200 kg. The berries were 98% water, by weight. After two days in the sun, the water content of the berries was only 95%, by weight. What was the total weight of the berries
read more ..
●
bingboy
Jan 27, 2025
Jan 26, 2025
0
18
1
+519
Algebra
Let a_1, a_2, a_3, \dots, a_8, a_9, a_{10} be an arithmetic sequence. If $a_1 + a_3 = 5$ and $a_2 + a_4 = 6$, then find $a_1$.
●
bIueb3rry
Jan 26, 2025
+1
42
0
+519
Algebra
When the same constant is added to the numbers $a,$ $b,$ and $c,$ a three-term geometric sequence arises. If $a = 60,$ $b = 100,$ and $c = 140,$ what is the common ratio of the resulting sequence?
bIueb3rry
Jan 26, 2025
+1
40
0
+519
Algebra
My street hockey team plays three games each week. My team lost all $9$ games in the first three weeks. Then, my team won one game and lost two games in the fourth week, bringing our record to $1$ win and $11$ losses. Each week after that, my team
read more ..
bIueb3rry
Jan 26, 2025
+1
18
1
+5
help plsssss
The square below is dilated by a scale factor of 44. Find the perimeter of the dilated square. Figures are not necessarily drawn to scale. the area of the square is 100. the area is 100
●
saanvi
Jan 26, 2025
0
25
1
+972
Geometry
Let
f(x) = \frac{1}{1+\frac{2}{1+\frac 3x}}.
There are three real numbers $x$ that are not in the domain of $f(x)$. What is the sum of those three numbers?
●
Rangcr897
Jan 26, 2025
0
24
1
+972
Geometry
The function $f(x)$ is defined only on domain $[-1,2]$, and is defined on this domain by the formula
f(x) = 2x^2-8x+1.
What is the range of $f(x)$? Express your answer as an interval or as a union of intervals.
●
Rangcr897
Jan 26, 2025
0
31
1
+972
Geometry
For certain values of k and m, the system
3a + 2b = 2
a + 2b = k - 8a - mb
has infinitely many solutions (a,b). What are k and m?
read more ..
●
Rangcr897
Jan 26, 2025
0
29
1
+972
Geometry
Let $x$ and $y$ be nonnegative real numbers. If $x + y = 25$, then find the minimum value of $6x + 3y.$
●
Rangcr897
Jan 26, 2025
0
35
1
+460
Geometry
Let $ABC$ be a triangle. Let $X$ be a point on $\overline{AC}$ such that $\angle BXA = 90^\circ.$ If $\angle ABC = 90^\circ,$ $AX = 15,$ and $CX = 15,$ then what is $BX?$
●
MEMEG0D
Jan 26, 2025
«
latest
9510
9509
..
9465
9464
9463
9462
9461
..
2
1
»
Post New Question
1 Online Users
Top Users
+130516
CPhill
moderator
+118723
Melody
moderator
+15131
asinus
moderator
+2221
Bosco
+1844
blackpanther
+1580
kittykat
+1540
learnmgcat
+1309
AnswerscorrectIy
+1024
Hi6942O
+1022
gnistory
+1013
magenta
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.